A bipedal creature walks on two legs.
Think about people – we are bipedal because we walk on two legs.
Some birds are also bipedal because they use two legs to move around.
So, if something has two legs and uses them to walk, it's bipedal.
A bipedal creature is an animal or robot that moves around using only two legs. Think of how humans walk—we are bipedal because we use two legs to get around. Some birds, like ostriches, are also bipedal.
Even though the word is often used to describe how something moves, you can also use it as a noun to talk about the creature itself. So, if something is bipedal, it means it walks on two feet.
A bipedal creature is one that moves around on two legs. Think of humans – we walk on two legs, so we are bipedal. Many birds are also bipedal, like chickens or ostriches, as they primarily use two legs for walking and running.
While you might usually hear 'bipedal' used to describe *how* something walks (as an adjective), it can also be used as a noun to refer to the creature or robot itself that walks this way. So, if something uses two limbs for its main way of getting around, you could call it a bipedal.
The term bipedal, often encountered as an adjective, describes an organism or mechanism that habitually moves using two legs. In its nominal form, a bipedal refers to such a creature or robot itself.
This characteristic is fundamental to understanding the locomotion and evolutionary adaptations of various species, notably humans and certain avian dinosaurs, distinguishing them from quadrupedal or other multi-limbed forms of movement.
The concept extends beyond biology, encompassing robotics where bipedal designs aim for human-like mobility.
bipedal في 30 ثانية
- walks on two legs
- two-legged creature
- uses two limbs for movement
§ What does it mean and when do people use it?
The term 'bipedal' originates from Latin, combining 'bi-' meaning 'two' and 'pes' meaning 'foot'. Essentially, it describes anything that uses two legs for movement. While you might most commonly encounter it as an adjective (e.g., 'bipedal creatures'), it can also function as a noun, referring to the creature itself. When used as a noun, 'a bipedal' or 'a biped' explicitly identifies an organism or even a robot that primarily relies on two limbs for locomotion.
- DEFINITION
- A creature that walks on two legs, such as a human or certain species of birds. While primarily used as an adjective, it can refer to any organism or robot that uses two-limbed locomotion as its primary method of movement.
Humans are the most familiar example of bipedal creatures, but many other animals, such as ostriches, kangaroos, and even some dinosaurs, also exhibit bipedalism. In the realm of robotics, humanoid robots are designed to be bipedal, mimicking human movement. The choice of bipedal locomotion for humans and other species often relates to advantages like freeing up forelimbs for other tasks (carrying, tool use), better visibility over tall grass, and improved thermoregulation in certain environments.
The archaeologist discovered fossilized footprints, indicating that the ancient primate was a bipedal.
When discussing biology, anthropology, or even robotics, 'bipedal' is a key term. Anthropologists often study the evolution of bipedalism in humans, trying to understand when and why our ancestors started walking on two legs. Biologists might classify animals based on their primary mode of locomotion, with bipedalism being a distinct category. In science fiction and engineering, the design and challenges of creating efficient bipedal robots are frequently explored.
Here are some common contexts where you might encounter the term 'bipedal':
- Evolutionary Biology: Discussions about human evolution frequently center on the development of bipedalism and its advantages.
- Animal Classification: Zoologists use bipedalism as a characteristic to group and differentiate various species.
- Robotics: Engineers working on humanoid robots often face challenges related to stable bipedal locomotion.
- Paleontology: The study of fossils can reveal whether extinct creatures were bipedal, offering clues about their behavior and environment.
- General Discourse: Sometimes, the term might be used in a more casual context to simply describe anything that walks on two legs, emphasizing this particular characteristic.
Understanding 'bipedal' helps in comprehending fundamental aspects of movement across the natural world and in technological innovations. It's a precise term that avoids ambiguity when describing two-legged motion, whether it's the natural gait of an animal or the programmed movements of a machine.
§ Understanding 'Bipedal' as a Noun
While 'bipedal' is most commonly encountered as an adjective describing something that walks on two legs, it can also function as a noun. When used as a noun, it refers directly to a creature or entity that exhibits two-legged locomotion. This usage is less frequent than its adjectival form but is perfectly valid and can be quite precise in certain contexts, particularly in scientific or anthropological discussions. It allows for a succinct way to refer to such an entity without needing to explicitly say 'a bipedal creature' or 'an organism that is bipedal'.
- Definition
- A creature that walks on two legs, such as a human or certain species of birds. While primarily used as an adjective, it can refer to any organism or robot that uses two-limbed locomotion as its primary method of movement.
§ Grammar and Usage as a Noun
When 'bipedal' acts as a noun, it behaves like any other singular or plural noun in a sentence. It can be the subject, object, or part of a prepositional phrase. The key is to understand that in this context, it refers to the entity itself, not merely describing it.
Here are some common grammatical structures and prepositions often associated with 'bipedal' when used as a noun:
- Subject of a Sentence: When 'bipedal' is the subject, it performs the action of the verb.
The bipedal stood upright, observing its surroundings.
- Object of a Verb: It can receive the action of a transitive verb.
Scientists studied the unique gait of the newly discovered bipedal.
- Object of a Preposition: It can follow a preposition, forming a prepositional phrase.
The ancient cave paintings depicted various forms of life, including a prominent bipedal.
Prepositions commonly used with 'bipedal' (as a noun) often relate to its characteristics, location, or interaction:
- Of: Used to indicate possession or a characteristic.
The movement of the bipedal was observed in detail.
- With: To indicate companionship or an associated feature.
The researchers were impressed with the agility of the robotic bipedal.
- Among: To indicate its presence within a group.
Evidence suggests that early hominids were among the first true bipedal forms.
§ Contextual Examples and Nuances
The use of 'bipedal' as a noun is often found in academic or technical writing where precision is paramount. While 'biped' is a more common noun for a two-legged creature, 'bipedal' can emphasize the characteristic of walking on two legs as the defining feature of the entity being discussed. For instance, when discussing the evolution of locomotion, one might refer to 'the emergence of the bipedal' to denote the evolutionary stage rather than just 'the biped'.
The study of ancient hominin tracks revealed crucial insights into the locomotion of the early bipedal.
The robotic prototype was designed to mimic the efficiency of a natural bipedal.
§ Plural Form
The plural form of 'bipedal' when used as a noun is 'bipedals'. It follows the regular pluralization rule for English nouns.
The paleontologist discovered fossils of several ancient bipedals in the excavation site.
In summary, while 'bipedal' is predominantly an adjective, its use as a noun is valid and useful for specific contexts. Understanding its grammatical behavior and preferred alternatives like 'biped' will help you employ it effectively in your writing and speech at a B2 CEFR level and beyond.
§ Definition
- Word
- bipedal
- Part of Speech
- noun
- CEFR Level
- B2
- Definition
- A creature that walks on two legs, such as a human or certain species of birds. While primarily used as an adjective, it can refer to any organism or robot that uses two-limbed locomotion as its primary method of movement.
§ Where you actually hear this word — work, school, news
The word "bipedal" is quite common in academic and scientific contexts, particularly in fields like biology, anthropology, robotics, and even paleontology. You might also encounter it in news articles discussing scientific discoveries or technological advancements.
§ In Academia and Science
In a school setting, especially in biology classes, "bipedal" is frequently used to describe animals. For example, when studying human evolution, the development of bipedalism is a key topic. Textbooks and lectures will often refer to early hominids as becoming increasingly bipedal over time. In zoology, you might discuss the bipedal locomotion of ostriches or kangaroos.
The fossil record provides strong evidence for the gradual emergence of bipedal primates.
In university courses, particularly those focusing on human anatomy or evolutionary biology, the term is central to understanding how our species evolved. You'd likely encounter discussions about the anatomical changes that allowed for efficient bipedal walking. Robotics engineers also use this term when designing robots that mimic human movement.
Researchers are developing advanced bipedal robots for search and rescue operations.
§ In the News
When new archaeological discoveries are made, especially those related to human ancestors, news reports will often highlight the evidence of bipedal locomotion. For example, if a new fossilized skeleton is found, headlines might discuss whether the creature was fully bipedal or partially so.
Scientists announced the discovery of an ancient primate showing early signs of bipedal movement.
Similarly, advancements in robotics often make headlines. If a company unveils a new humanoid robot, reporters will typically describe its capabilities, including its ability to walk bipedally. The word helps to convey the sophistication of the machine's movement.
The latest prototype demonstrates impressive stability as a bipedal walking machine.
§ General Usage
While "bipedal" is often used in formal contexts, you might hear it in documentaries about animals or human evolution. It's a precise term that helps differentiate between various forms of locomotion. For example, when comparing humans to other primates, the unique aspect of human bipedalism is frequently emphasized.
Understanding this word enhances your comprehension of scientific discussions and news about evolution, animal behavior, and cutting-edge robotics. It’s a foundational term in several academic disciplines and plays a crucial role in describing the mechanics of movement across various forms of life and artificial intelligence.
When describing human evolution:
The transition to bipedal locomotion is considered a defining characteristic of human evolution.
In discussions about animal adaptations:
Birds are excellent examples of naturally bipedal creatures.
Regarding robotic development:
Engineers face many challenges in designing stable and efficient bipedal robots.
How Formal Is It?
"The study focused on the biomechanics of various bipeds, examining their gait and balance."
"A two-legged creature, like a human, possesses a unique form of locomotion."
"That little two-footer bird was hopping all over the picnic table."
"Look at the penguin, it's a funny two-legger waddling around!"
"Watch out for that robot; it's a pretty advanced two-step, navigating obstacles like a champ."
مستوى الصعوبة
The word is not very common, so learners might not have encountered it before. However, the definition provided is clear and uses relatively simple language, making it accessible for a B2 learner.
B2 learners should be able to spell 'bipedal' correctly after seeing it. Using it naturally in a sentence might require some practice, as it's a more academic or specific term.
Pronunciation is fairly straightforward (BY-peh-dul), but again, incorporating it into spontaneous speech might be challenging for some B2 learners due to its specific nature.
Similar to speaking, understanding 'bipedal' when heard depends on prior exposure and context. The pronunciation is clear, which helps.
ماذا تتعلّم بعد ذلك
المتطلبات الأساسية
تعلّم لاحقاً
متقدم
قواعد يجب معرفتها
Nouns can be formed from adjectives, often by adding suffixes like -ness, -ity, -tion, or -ance. In this case, 'bipedal' is primarily an adjective, but can function as a noun describing a creature.
The bipedal creature walked through the forest.
Nouns can be singular or plural. The plural form of 'bipedal' when used as a noun would be 'bipedals'.
Several bipedals were observed in the ancient ruins.
Nouns can act as the subject or object of a sentence.
The bipedal moved swiftly across the savanna.
Possessive nouns are formed by adding an apostrophe and an 's' (or just an apostrophe for plural nouns ending in 's').
The bipedal's gait was unique.
Nouns can be modified by adjectives.
The tall bipedal reached for the fruit.
أمثلة حسب المستوى
A bird is a bipedal animal.
Птица — двуногое животное.
Simple present tense, subject-verb agreement.
Humans are bipedal.
Люди двуногие.
Simple present tense, linking verb 'are'.
The robot is bipedal.
Робот двуногий.
Simple present tense, linking verb 'is'.
I saw a bipedal dinosaur in a movie.
Я видел двуногого динозавра в фильме.
Simple past tense, regular verb 'saw'.
That animal walks on two legs; it is bipedal.
Это животное ходит на двух ногах; оно двуногое.
Simple present tense, conjunction 'it is'.
My dog is not bipedal, it walks on four legs.
Моя собака не двуногая, она ходит на четырех лапах.
Simple present tense, negative statement.
Can a chicken be bipedal?
Может ли курица быть двуногой?
Modal verb 'can' for ability.
The child stood up and became bipedal.
Ребенок встал и стал двуногим.
Simple past tense, sequence of actions.
The robot was bipedal, walking just like a person.
El robot era bípedo, caminaba como una persona.
Describes a characteristic.
Most birds are bipedal, using their two legs to move around.
La mayoría de las aves son bípedas, usan sus dos patas para moverse.
Describes a characteristic.
Humans are bipedal creatures, which means we walk on two legs.
Los humanos somos criaturas bípedas, lo que significa que caminamos sobre dos piernas.
Explains the meaning.
The dinosaur was bipedal and ran very fast.
El dinosaurio era bípedo y corría muy rápido.
Describes a characteristic.
A bipedal animal can stand up tall.
Un animal bípedo puede pararse erguido.
Describes a capability.
Learning to be bipedal was an important step for early humans.
Aprender a ser bípedo fue un paso importante para los primeros humanos.
Describes a developmental stage.
The bipedal robot could carry things in its arms.
El robot bípedo podía llevar cosas en sus brazos.
Describes a capability.
Some animals are bipedal, but not all.
Algunos animales son bípedos, pero no todos.
Highlights a distinction.
The discovery of ancient hominid fossils provided crucial evidence for the early evolution of bipedalism.
Hominid fossils provide evidence for bipedalism's early evolution.
Use of 'hominid fossils' and 'bipedalism' for a C1 level.
Robotics engineers are constantly striving to improve the stability and agility of bipedal robots in complex environments.
Engineers work to enhance bipedal robots' stability and agility.
Vocabulary like 'stability,' 'agility,' and 'complex environments' is appropriate.
While most birds are bipedal, their skeletal structure differs significantly from that of bipedal mammals.
Most birds are bipedal, but their skeletons differ from bipedal mammals.
Comparison of different bipedal groups demonstrates advanced understanding.
The transition to bipedal locomotion is considered a pivotal moment in human evolutionary history.
Bipedal locomotion was a key moment in human evolution.
'Pivotal moment' and 'evolutionary history' are C1-level phrases.
Scientists hypothesize that bipedalism offered advantages such as increased visibility and free hands for carrying objects.
Bipedalism likely gave advantages like better sight and free hands.
Use of 'hypothesize,' 'advantages,' and 'carrying objects' for detailed explanation.
Despite its obvious benefits, bipedal standing presents unique challenges for spinal health and balance.
Even with benefits, bipedal standing challenges spine health and balance.
Acknowledgement of pros and cons, using 'obvious benefits' and 'unique challenges.'
The intricate muscular and skeletal adaptations required for efficient bipedal movement are a testament to natural selection.
The complex muscle and bone changes for bipedal movement show natural selection.
'Intricate muscular and skeletal adaptations' and 'testament to natural selection' are advanced vocabulary.
Early bipedal hominins still spent a considerable amount of time in trees, suggesting a transitional phase in their development.
Early bipedal ancestors were in trees, showing a development phase.
Historical context with 'hominins' and 'transitional phase' fits C1.
The paleontologist unearthed a fossilized footprint, a definitive trace of a bipedal dinosaur that once roamed these lands.
Paleontologen grävde fram ett fossiliserat fotavtryck, ett definitivt spår av en tvåbent dinosaurie som en gång strövade omkring i dessa länder.
Here, 'bipedal' acts as an adjective modifying 'dinosaur', but the overall sentence structure and vocabulary are C2 level.
Evolutionary biologists often ponder the pivotal shift to bipedalism as a crucial factor in the development of human intelligence.
Evolutionära biologer funderar ofta över det avgörande skiftet till tvåbenthet som en avgörande faktor i utvecklingen av mänsklig intelligens.
'Bipedalism' is the noun form, but the sentence uses 'bipedal' as part of a complex conceptual discussion, typical of C2.
Despite its somewhat ungainly appearance, the robot's bipedal gait was surprisingly efficient, navigating uneven terrain with remarkable agility.
Trots sitt något klumpiga utseende var robotens tvåbenta gångart förvånansvärt effektiv och navigerade ojämn terräng med anmärkningsvärd smidighet.
Complex sentence structure with a sophisticated adverb ('ungainly') and adjective ('remarkable') alongside 'bipedal' at C2.
Among the myriad adaptations observed in avian species, the development of a strong bipedal stance has allowed many to thrive in diverse environments.
Bland de otaliga anpassningar som observerats hos fågelarter har utvecklingen av en stark tvåbent hållning gjort att många kan frodas i olika miljöer.
'Myriad adaptations' and 'thrive in diverse environments' contribute to the C2 level, along with the precise use of 'bipedal stance'.
The anthropological debate often centers on whether early hominids were obligate or facultative bipeds, influencing theories of their social structures.
Den antropologiska debatten kretsar ofta kring huruvida tidiga hominider var obligata eller fakultativa tvåbenta varelser, vilket påverkar teorier om deras sociala strukturer.
This sentence uses 'biped' directly as a noun, and the complex academic vocabulary ('anthropological debate,' 'obligate or facultative bipeds,' 'hominids') places it firmly at C2.
Researchers are developing increasingly sophisticated bipedal prosthetics, offering unprecedented mobility to individuals with lower limb amputations.
Forskare utvecklar alltmer sofistikerade tvåbenta proteser, vilket erbjuder oöverträffad rörlighet till individer med amputationer i nedre extremiteterna.
The vocabulary ('sophisticated prosthetics,' 'unprecedented mobility,' 'lower limb amputations') and the conceptual complexity are C2.
The ancient cave paintings depicted figures that were distinctly bipedal, suggesting a long history of human-like locomotion.
De gamla grottmålningarna avbildade figurer som var tydligt tvåbenta, vilket tyder på en lång historia av mänsklig liknande rörelse.
A clear, concise sentence that uses 'distinctly bipedal' to convey a C2 level of specificity and observation.
While some primates exhibit temporary bipedal behavior, humans are unique in their habitual and obligate bipedalism, a defining characteristic of our species.
Medan vissa primater uppvisar tillfälligt tvåbent beteende, är människor unika i sin vanemässiga och obligata tvåbenthet, en definierande egenskap hos vår art.
The contrast between 'temporary' and 'habitual and obligate' along with the sophisticated biological terminology makes this a C2 example.
المرادفات
الأضداد
أنماط نحوية
تعبيرات اصطلاحية
"To find your feet"
To become confident or successful in a new situation or environment.
After moving to a new city, it took her a few months to find her feet.
neutral"To put your best foot forward"
To try to make a good impression.
He tried to put his best foot forward during the job interview.
neutral"To have two left feet"
To be clumsy or awkward, especially when dancing.
I can't dance at all; I have two left feet!
informal"To get cold feet"
To become nervous or hesitant about something one had planned to do.
She got cold feet before her wedding and almost called it off.
informal"To stand on your own two feet"
To be independent and self-sufficient.
It's time for you to leave home and stand on your own two feet.
neutral"To drag your feet"
To be slow or reluctant to do something.
The committee has been dragging its feet on making a decision.
neutral"To get off on the wrong foot"
To start a relationship or activity badly.
We really got off on the wrong foot when we first met.
neutral"To follow in someone's footsteps"
To do the same work or achieve the same success as someone else, especially a parent.
He decided to follow in his father's footsteps and become a doctor.
neutral"To keep your feet on the ground"
To remain sensible and realistic despite success or excitement.
Despite all the praise, she managed to keep her feet on the ground.
neutral"To land on your feet"
To recover well from a difficult situation.
Even after losing his job, he managed to land on his feet and found a new one quickly.
neutralأنماط الجُمل
X is bipedal.
The ostrich is a bipedal bird.
X walks bipedally.
Humans walk bipedally.
X has a bipedal gait.
Early hominids developed a bipedal gait over time.
The ability to walk bipedally is characteristic of X.
The ability to walk bipedally is characteristic of primates.
Bipedalism is common in X.
Bipedalism is common in certain dinosaur species.
X relies on bipedal locomotion.
Many robots are being designed to rely on bipedal locomotion for navigating complex environments.
The evolution of bipedalism in X is a subject of study.
The evolution of bipedalism in humans is a subject of ongoing scientific study.
X exhibits bipedal characteristics.
Some marsupials, like kangaroos, exhibit bipedal characteristics when hopping.
كيفية الاستخدام
While commonly used as an adjective (e.g., "bipedal locomotion"), "bipedal" can also function as a noun to refer to a creature that walks on two legs. This is particularly useful in scientific or technical contexts when discussing different forms of locomotion.
A common mistake is assuming that "bipedal" can only be used as an adjective. For example, one might incorrectly say, "Humans are bipedal animals," instead of the more concise and equally correct, "Humans are bipeds" or "Humans are bipedals" (though 'biped' is more common as a noun). Another mistake is confusing it with creatures that *can* stand on two legs but primarily use four, such as bears; a true bipedal creature uses two legs as its primary mode of movement.
نصائح
Understand the Etymology
Break down bipedal: 'bi-' means two, and 'ped' relates to foot. This helps in understanding words like bicycle (two wheels) or pedal (foot lever).
Visual Association
Picture a human or a bird walking. Associate the word bipedal directly with that image to strengthen memory.
Contextual Examples
Think of sentences where bipedal fits. For example: 'Humans are bipedal creatures.' or 'Many dinosaurs were bipedal.'
Practice Pronunciation
Say bipedal out loud several times. Pay attention to the stress on syllables: bi-PE-dal. This helps with recall and speaking fluency.
Identify Synonyms/Antonyms
While there isn't a direct antonym, consider words like 'quadrupedal' (four-legged) to understand the contrast. This builds a network of related vocabulary for bipedal.
Flashcards with Images
Create a flashcard. On one side, write bipedal. On the other, draw a simple stick figure walking or paste an image of an ostrich.
Use in Writing
Integrate bipedal into your own sentences, emails, or short stories. The active use of the word solidifies its meaning.
Listen for the Word
Pay attention to documentaries, science programs, or articles about biology. When you hear or read bipedal, note how it's used.
Explain to Someone Else
Try to explain what bipedal means to a friend or family member. Teaching reinforces your own understanding.
Explore Related Fields
Delve into anthropology or robotics to understand the significance of bipedal locomotion in evolution or engineering. This adds depth to your comprehension.
احفظها
وسيلة تذكّر
Imagine a **bi**cycle with **pedals**. A bipedal creature uses 'two pedals' or two legs to move, just like you use two pedals on a bicycle.
ربط بصري
Picture a proud, walking bird (like an ostrich) striding confidently on its two legs, with a tiny human figure walking alongside it, both moving in sync. The two legs are emphasized and highlighted.
Word Web
تحدٍّ
Describe five different scenarios where you might encounter a bipedal creature, either in real life, fiction, or imagination. For each scenario, explain what makes it bipedal.
الأسئلة الشائعة
10 أسئلةThat's right! While bipedal is primarily used as an adjective (e.g., 'bipedal movement'), it can indeed function as a noun to refer to a creature that walks on two legs. It's a common characteristic of words in English to have multiple parts of speech depending on their usage.
That's an excellent question! Bipedal is an adjective meaning 'walking on two feet' or 'having two feet'. For example, 'Humans are bipedal creatures.' Biped, on the other hand, is a noun that refers to 'an animal that uses two legs for walking'. So, you could say, 'Humans are bipeds'.
Absolutely! The definition explicitly states that bipedal can refer to any organism or robot that uses two-limbed locomotion as its primary method of movement. So, describing a robot that walks on two legs as 'bipedal' is perfectly correct.
Yes, generally speaking, all birds are considered bipedal. They primarily use their two legs for movement, even if they also fly. The definition highlights that it refers to creatures using two-limbed locomotion as their primary method of movement.
For a CEFR B2 level, bipedal is a good word to know. While it might not come up in every casual conversation, it's quite common in discussions about biology, anatomy, and even robotics. It's definitely a word that will expand your vocabulary for more nuanced discussions.
The word bipedal comes from Latin. 'Bi-' means 'two', and 'ped-' comes from 'pes' or 'pedis', meaning 'foot'. So, it literally means 'two-footed' or 'having two feet'.
That's a good point to consider. The definition emphasizes 'primary method of movement.' So, if an animal only occasionally walks on two legs and primarily uses four, it wouldn't typically be described as bipedal. For example, a bear might stand on two legs, but it's not primarily bipedal.
While bipedal is the most direct and common term for 'walking on two legs', you might encounter phrases like 'two-legged locomotion' or simply 'upright walking' when talking about this concept. 'Biped' is also a good noun to know, as we discussed.
You're absolutely right! Bipedalism is the noun form that refers to the characteristic or state of being bipedal, or the ability to walk on two legs. It's often used in scientific contexts to discuss the evolution of walking on two feet.
Yes, there are! Kangaroos, for example, are famously bipedal, using their strong hind legs for hopping. Some primates, though primarily quadrupedal, can also walk bipedally for short distances. The concept of bipedal movement isn't exclusive to just humans and birds.
اختبر نفسك 120 أسئلة
A bird is a ___ animal.
Birds walk on two legs, so they are bipedal.
Humans are ___ creatures.
Humans walk on two legs, so they are bipedal.
A robot that walks on two legs is called a ___ robot.
If a robot walks on two legs, it is a bipedal robot.
Most birds are ___.
Birds use two legs to walk.
My toy robot is ___ because it has two legs.
A robot with two legs is bipedal.
Is a cat a ___ animal?
No, a cat walks on four legs, not two.
Which animal is bipedal?
Birds walk on two legs, so they are bipedal.
What does 'bipedal' mean?
Bipedal means walking on two legs.
Is a human a bipedal creature?
Humans walk on two legs, so they are bipedal.
A snake is bipedal.
Snakes do not have legs, so they are not bipedal.
A chicken is bipedal.
Chickens walk on two legs, so they are bipedal.
A table is bipedal.
A table is an object, not a creature that walks. It also has four legs.
Listen for the animal that walks on two legs.
Listen for what humans are.
Listen for another thing that can be bipedal.
Read this aloud:
Say: I see a bipedal bird.
Focus: bipedal
قلت:
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Read this aloud:
Say: A person walks on two legs.
Focus: person, walks
قلت:
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Read this aloud:
Say: This robot has two legs.
Focus: robot, two, legs
قلت:
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Write a short sentence about an animal that walks on two legs. Use the word 'bipedal'.
Well written! Good try! Check the sample answer below.
Sample answer
A bird is a bipedal animal.
Complete the sentence: A human is a ______ creature.
Well written! Good try! Check the sample answer below.
Sample answer
A human is a bipedal creature.
Write one sentence about what 'bipedal' means.
Well written! Good try! Check the sample answer below.
Sample answer
Bipedal means walking on two legs.
What does 'bipedal' mean in this passage?
Read this passage:
Birds can fly. They also walk on two legs. This means birds are bipedal. A chicken is a bird.
What does 'bipedal' mean in this passage?
The passage says 'They also walk on two legs. This means birds are bipedal.', so bipedal means walking on two legs.
The passage says 'They also walk on two legs. This means birds are bipedal.', so bipedal means walking on two legs.
Are dogs bipedal?
Read this passage:
A human walks on two feet. This is why humans are called bipedal. Dogs walk on four feet.
Are dogs bipedal?
The passage states 'Dogs walk on four feet.' and that bipedal means walking on two feet, so dogs are not bipedal.
The passage states 'Dogs walk on four feet.' and that bipedal means walking on two feet, so dogs are not bipedal.
What kind of robots are bipedal?
Read this passage:
Some robots can walk like a human. They have two legs. These robots are bipedal.
What kind of robots are bipedal?
The passage states 'They have two legs. These robots are bipedal.', so robots with two legs are bipedal.
The passage states 'They have two legs. These robots are bipedal.', so robots with two legs are bipedal.
This sentence describes how humans move.
This sentence tells us about a bird's legs.
This sentence shows the action of walking on two feet.
Which animal is bipedal?
Birds walk on two legs, so they are bipedal.
What does 'bipedal' mean?
Bipedal means walking on two feet or legs.
A robot that walks on two legs is called a ___ robot.
Robots that use two legs for movement are called bipedal robots.
Humans are bipedal.
Humans walk on two legs, so they are bipedal.
A snake is bipedal.
Snakes do not have legs, so they cannot be bipedal.
A car is bipedal.
A car has wheels, not legs, so it is not bipedal.
Listen for the description of humans.
Pay attention to the examples of bipedal birds.
Listen for what a two-legged robot is called.
Read this aloud:
I saw a bipedal robot at the science museum.
Focus: bipedal
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Read this aloud:
Most people are bipedal.
Focus: bipedal
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Dinosaurs like T-Rex were bipedal.
Focus: bipedal
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Which of these animals is typically considered bipedal?
Humans walk on two legs, which is the definition of bipedal locomotion.
If something is bipedal, what does that mean?
The word 'bipedal' specifically refers to walking on two feet or legs.
A robot designed to walk like a person would be described as a _______ robot.
Since the robot walks like a person, it uses two legs, making it bipedal.
Birds are examples of bipedal creatures.
Most birds walk and stand on two legs, fitting the definition of bipedal.
A car is a bipedal vehicle.
A car has four wheels and does not 'walk' on two legs, so it is not bipedal.
All animals that can stand on two legs are considered bipedal.
Bipedal means that two-limbed locomotion is the primary method of movement. Some animals can stand on two legs but don't primarily move that way, like bears.
Listen for the description of humans' movement.
Consider how birds move on the ground.
Think about what kind of movement makes something bipedal.
Read this aloud:
The dinosaur walked on two legs, so it was bipedal.
Focus: bipedal
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Read this aloud:
Kangaroos are bipedal animals.
Focus: kangaroos, bipedal
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Read this aloud:
Can you name another bipedal animal?
Focus: bipedal
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Imagine you are describing a new robot. Explain how its bipedal movement makes it special or useful. What can it do because it walks on two legs?
Well written! Good try! Check the sample answer below.
Sample answer
This new robot is very special because of its bipedal movement. It walks on two legs, just like a human. This design allows it to climb stairs and navigate crowded spaces easily, which is very useful for delivery tasks in cities. It can also pick up objects from the floor without falling over.
Write a short paragraph about an animal you know that is bipedal. Describe how it uses its two legs for movement.
Well written! Good try! Check the sample answer below.
Sample answer
One interesting bipedal animal is a bird. For example, a chicken uses its two legs to walk and run on the ground. It can quickly move around the farm, scratching the earth to find food. Its two-legged movement helps it to balance and also to escape from danger.
Explain in your own words what 'bipedal' means. Give an example of something that is bipedal.
Well written! Good try! Check the sample answer below.
Sample answer
Bipedal means that something walks or moves using only two legs. An excellent example of a bipedal creature is a human. We use our two legs to walk, run, and stand upright, which is our primary way of moving.
According to the passage, what is a key characteristic of ostriches related to their movement?
Read this passage:
Ostriches are fascinating birds that are known for their speed. Unlike many other birds, ostriches cannot fly, but they are excellent runners. They are bipedal, meaning they use their two powerful legs to move across the African plains at speeds up to 70 kilometers per hour. Their long legs also help them to see over tall grass.
According to the passage, what is a key characteristic of ostriches related to their movement?
The passage states that ostriches are 'bipedal, meaning they use their two powerful legs to move across the African plains at speeds up to 70 kilometers per hour.' This directly supports the answer that they are bipedal and fast runners.
The passage states that ostriches are 'bipedal, meaning they use their two powerful legs to move across the African plains at speeds up to 70 kilometers per hour.' This directly supports the answer that they are bipedal and fast runners.
What was an advantage for early humans becoming bipedal?
Read this passage:
Early humans were among the first primates to become fully bipedal. This change, from moving on four limbs to two, allowed them to carry objects, use tools more effectively, and see further across the landscape. Becoming bipedal was a very important step in human evolution.
What was an advantage for early humans becoming bipedal?
The passage explains, 'This change, from moving on four limbs to two, allowed them to carry objects, use tools more effectively, and see further across the landscape.'
The passage explains, 'This change, from moving on four limbs to two, allowed them to carry objects, use tools more effectively, and see further across the landscape.'
Why are some robots designed to be bipedal?
Read this passage:
Some robots are designed to be bipedal, mimicking human movement. This design choice is often made so that robots can operate in environments built for humans, such as houses or offices, where stairs and narrow doorways are common. However, designing stable bipedal robots is quite challenging.
Why are some robots designed to be bipedal?
The passage states, 'This design choice is often made so that robots can operate in environments built for humans, such as houses or offices, where stairs and narrow doorways are common.'
The passage states, 'This design choice is often made so that robots can operate in environments built for humans, such as houses or offices, where stairs and narrow doorways are common.'
Which of the following creatures is typically described as bipedal?
Humans walk on two legs, which is the definition of bipedal locomotion.
In a robotics context, what would a bipedal robot be designed to do?
A bipedal robot is designed to emulate two-legged movement, similar to humans or birds.
Which of these words is a synonym for 'bipedal' when describing locomotion?
'Bipedal' specifically refers to walking on two legs, making 'two-legged' a direct synonym for this type of movement.
All birds are considered bipedal creatures.
Birds primarily use their two legs for movement on land, fitting the definition of bipedal.
The word 'bipedal' can only be used as an adjective.
While primarily an adjective, the definition states it can also be used as a noun to refer to a creature that walks on two legs.
An animal that crawls on its belly is considered bipedal.
Bipedal refers to walking on two legs; crawling on one's belly does not involve legs for locomotion.
Listen for the description of early hominids' movement.
Consider what kind of robots are being discussed.
Think about the characteristics of an ostrich's movement.
Read this aloud:
Can you describe a bipedal animal that is not a human?
Focus: bipedal
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Explain the evolutionary advantages of bipedalism in humans.
Focus: evolutionary advantages, bipedalism
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Imagine a future where most service robots are bipedal. What are some pros and cons?
Focus: service robots, pros and cons
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Imagine you are describing a newly discovered alien species to a team of scientists. Describe its method of locomotion, specifically mentioning if it is bipedal or not, and elaborate on how its movement might be adapted to its environment. Use at least 100 words.
Well written! Good try! Check the sample answer below.
Sample answer
The newly discovered alien species, which we'll call 'Xylosapiens,' presents a fascinating case for study regarding its locomotion. Unlike many terrestrial creatures, the Xylosapiens are distinctly bipedal, standing tall on two robust, jointed legs. Their bipedal movement appears highly efficient, allowing them to navigate the dense, root-like structures of their homeworld with remarkable agility. Their feet are surprisingly broad, providing excellent stability on uneven surfaces, and their gait suggests a powerful stride, indicating they can cover significant distances. This bipedal adaptation seems perfectly suited to their arboreal environment, enabling them to reach higher foliage for sustenance and avoid ground predators. The upper limbs, while not used for locomotion, are highly dexterous, further highlighting their specialized bipedal existence.
Write a short paragraph discussing the advantages and disadvantages of bipedal locomotion for humans compared to quadrupedal locomotion in other animals. Consider aspects like speed, balance, and tool use.
Well written! Good try! Check the sample answer below.
Sample answer
Bipedal locomotion in humans offers distinct advantages over quadrupedal movement seen in many animals, particularly concerning tool use and observation. Standing upright frees our hands, enabling us to carry objects, craft tools, and manipulate our environment with precision. This vertical posture also provides a wider field of vision, aiding in spotting predators or prey from a distance. However, there are also disadvantages. Bipedalism can be less stable than quadrupedalism, making us more prone to falls, and it places significant stress on the spine and knees, leading to common musculoskeletal issues. Furthermore, quadrupeds often achieve greater speeds for short bursts, which can be crucial for hunting or escaping danger. While our bipedal stance has been a cornerstone of human evolution, it comes with a unique set of trade-offs.
Describe a fictional robot designed for a specific task. Explain whether it is bipedal or not, and justify this design choice based on the robot's function and the environment it operates in.
Well written! Good try! Check the sample answer below.
Sample answer
I'm envisioning a 'Terra-Surveyor' robot, designed to explore treacherous, rocky Martian terrain with numerous crevices and steep inclines. This robot would absolutely be bipedal. Its bipedal design, featuring articulated knees and ankles, allows it to navigate highly uneven surfaces with greater flexibility and adaptability than a wheeled or tracked system. While a wheeled robot might struggle with large boulders or deep fissures, the Terra-Surveyor's bipedal gait enables it to step over obstacles, maintain balance on narrow ledges, and even use its manipulators for additional stability in difficult ascents. Its robust, independently controlled legs allow for precise weight distribution and dynamic balance adjustments, crucial for preventing tipovers in the low-gravity, unpredictable Martian landscape. This design prioritizes maneuverability and access over raw speed, perfectly suiting its exploratory mission.
According to the passage, which of the following is NOT a suggested advantage of bipedalism?
Read this passage:
The evolution of bipedalism is a defining characteristic of the human lineage. While many theories exist, one prominent hypothesis suggests that standing upright provided an advantage in savanna environments, allowing early hominins to see over tall grasses and spot predators or food sources. Additionally, bipedalism freed the hands for carrying food, infants, or tools, which was crucial for social cooperation and technological development. This transition, however, also brought about anatomical changes, such as a modified pelvis and spine, to accommodate the new posture and weight distribution.
According to the passage, which of the following is NOT a suggested advantage of bipedalism?
The passage mentions seeing over tall grasses, carrying objects, and spotting predators as advantages. It does not mention increased running speed as an advantage of bipedalism; in fact, human bipedalism is often less efficient for short bursts of speed compared to quadrupedal locomotion.
The passage mentions seeing over tall grasses, carrying objects, and spotting predators as advantages. It does not mention increased running speed as an advantage of bipedalism; in fact, human bipedalism is often less efficient for short bursts of speed compared to quadrupedal locomotion.
What primary environmental challenge does bipedalism help penguins overcome?
Read this passage:
Penguins are fascinating examples of bipedal birds. While their terrestrial locomotion on two legs may appear somewhat awkward, it is remarkably efficient for traversing ice and snow. Their upright posture reduces their surface area exposed to wind, helping them conserve heat in frigid environments. Moreover, their bipedal gait allows them to waddle, a movement that, despite appearances, is highly energy-efficient for their body shape and short legs, especially when moving between their nesting grounds and the ocean.
What primary environmental challenge does bipedalism help penguins overcome?
The passage explicitly states that 'Their upright posture reduces their surface area exposed to wind, helping them conserve heat in frigid environments.'
The passage explicitly states that 'Their upright posture reduces their surface area exposed to wind, helping them conserve heat in frigid environments.'
What is a key advantage of bipedal robots over wheeled robots, according to the text?
Read this passage:
Robots designed for various tasks can exhibit different forms of locomotion. While some utilize wheels or tracks for speed and stability on flat surfaces, others are engineered to be bipedal. Bipedal robots, though often more complex to design and control, excel in environments requiring adaptability, such as climbing stairs, navigating cluttered spaces, or traversing uneven terrain that would hinder wheeled counterparts. The development of advanced balance algorithms is crucial for the successful operation of these sophisticated machines.
What is a key advantage of bipedal robots over wheeled robots, according to the text?
The passage states that bipedal robots 'excel in environments requiring adaptability, such as climbing stairs, navigating cluttered spaces, or traversing uneven terrain that would hinder wheeled counterparts.'
The passage states that bipedal robots 'excel in environments requiring adaptability, such as climbing stairs, navigating cluttered spaces, or traversing uneven terrain that would hinder wheeled counterparts.'
This sentence defines 'bipedal' and explains what a bipedal creature is.
This sentence provides an example of bipedal creatures.
This sentence highlights humans as a prominent example of bipedalism.
The evolution of __________ locomotion was a pivotal moment in human history, freeing our hands for tool use and carrying.
Bipedal locomotion refers to walking on two legs, which is characteristic of humans and was crucial for our development.
While most birds are obligate __________, some species, like ostriches, have developed powerful two-legged running capabilities.
Birds are known for walking on two legs, making them bipeds.
Early hominids exhibited skeletal adaptations that strongly suggest a transition towards a more __________ stance, even if not fully erect.
The context of hominid evolution points to the development of walking on two legs.
The roboticist showcased a new prototype with advanced __________ movement, capable of navigating uneven terrain with surprising stability.
Robots that walk on two legs are described as having bipedal movement.
One of the key distinguishing features of the Australopithecus afarensis fossil 'Lucy' was evidence of habitual __________ gait.
'Lucy' is famous for demonstrating early bipedalism in human ancestors.
The theoretical advantages of __________ locomotion include better visibility over tall grasses and reduced solar radiation exposure.
Walking upright on two legs (bipedalism) offers these specific advantages mentioned in the sentence.
Which of the following creatures is primarily bipedal?
Kangaroos are well-known for their bipedal locomotion, using their powerful hind legs for hopping.
In an evolutionary context, the development of bipedalism in early hominids is often associated with:
Bipedalism freed the hands for carrying food, tools, and offspring, and allowed for better visibility over tall grasses.
Which of these hypothetical robots would be considered bipedal?
The definition of bipedalism refers to movement on two legs, which is precisely what such a robot would do.
All animals that are capable of standing on two legs are considered primarily bipedal.
While many animals can stand on two legs, 'primarily bipedal' implies it is their main method of locomotion. For example, bears can stand on two legs but are not primarily bipedal.
The term 'bipedal' can only refer to biological organisms, not mechanical entities.
The definition explicitly states that 'it can refer to any organism or robot that uses two-limbed locomotion.'
The transition to bipedalism in human ancestors is believed to have had significant implications for their survival and adaptation.
Bipedalism offered numerous evolutionary advantages, including better visibility, the ability to carry resources, and reduced sun exposure.
Listen for the advantages of bipedalism.
Focus on the challenges faced in mimicking bipedal locomotion in robotics.
Identify what bipedal gait is a defining characteristic of.
Read this aloud:
Can you elaborate on the anatomical adaptations necessary for sustained bipedal movement?
Focus: elaborate, anatomical, adaptations, sustained, bipedal
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Read this aloud:
Discuss the potential evolutionary pressures that might have led to the development of bipedalism.
Focus: evolutionary, pressures, development, bipedalism
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Read this aloud:
How does bipedalism affect the way we perceive and interact with our environment, compared to quadrupedal creatures?
Focus: bipedalism, perceive, interact, environment, quadrupedal
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Discuss the evolutionary advantages and disadvantages of bipedalism in humans compared to quadrupedal locomotion in other primates. Consider factors such as energy efficiency, field of vision, and vulnerability.
Well written! Good try! Check the sample answer below.
Sample answer
Bipedalism, while offering a wider field of vision and freeing the hands for tool use and carrying, presents several evolutionary trade-offs. The increased strain on the spine and knees, coupled with a smaller birth canal in human females, are significant disadvantages compared to the stability and speed often afforded by quadrupedal locomotion. However, the energy efficiency of bipedal walking over long distances may have been a crucial factor in early human survival.
Imagine a future where robots are commonplace. Describe a scenario where a bipedal robot is uniquely suited for a task that a wheeled or tracked robot could not perform effectively. Explain the specific features of bipedalism that make it superior in this context.
Well written! Good try! Check the sample answer below.
Sample answer
In a future dominated by advanced robotics, a bipedal robot could excel in urban search and rescue operations, particularly in environments compromised by structural collapse. Its ability to navigate debris-strewn, uneven terrain, climb stairs, and squeeze through narrow gaps would be invaluable. Wheeled robots would struggle with obstacles, and tracked robots, while capable over rough ground, might lack the agility for intricate maneuvering. The human-like gait of a bipedal robot allows it to maintain balance and manipulate objects with greater dexterity in such complex and unpredictable scenarios.
Analyze the linguistic shift in the word 'bipedal' from an adjective to a noun, as seen in the definition. Discuss how this grammatical flexibility reflects evolving scientific discourse and public understanding of concepts like 'creatures' or 'robots' that exhibit bipedal locomotion.
Well written! Good try! Check the sample answer below.
Sample answer
The evolution of 'bipedal' from a primarily adjectival descriptor to an occasional noun signifies a fascinating linguistic adaptation. Initially, one might speak of a 'bipedal creature,' emphasizing the characteristic. However, as scientific fields like robotics advance, and the concept of a 'bipedal' entity becomes more distinct and commonplace, the word itself takes on a substantive role, allowing for succinct references like 'the bipedal navigated the obstacle course.' This shift mirrors how specialized terms gain independence as the concepts they represent become more concretized in collective understanding.
What is a key aspect of the evolutionary theories surrounding bipedalism in hominins?
Read this passage:
The evolution of bipedalism in hominins is a subject of extensive debate among paleoanthropologists. While some theories suggest it freed the hands for tool use and carrying offspring, others propose it was an adaptation to changing environments, allowing for more efficient movement across open savannas. The fossil record indicates a gradual transition, with early hominins exhibiting a mosaic of arboreal and terrestrial adaptations before fully committing to bipedal locomotion.
What is a key aspect of the evolutionary theories surrounding bipedalism in hominins?
The passage states that the evolution of bipedalism is a 'subject of extensive debate' and mentions 'some theories suggest' and 'others propose,' indicating multiple perspectives.
The passage states that the evolution of bipedalism is a 'subject of extensive debate' and mentions 'some theories suggest' and 'others propose,' indicating multiple perspectives.
What is a major difficulty in achieving practical bipedal locomotion in robotics?
Read this passage:
In the realm of robotics, developing stable and efficient bipedal locomotion remains a significant challenge. While impressive strides have been made, particularly with humanoid robots, the energy consumption associated with maintaining balance and navigating uneven terrain is often high. Researchers are constantly refining algorithms and mechanical designs to mimic the fluidity and robustness of biological bipedal systems.
What is a major difficulty in achieving practical bipedal locomotion in robotics?
The passage explicitly states that 'the energy consumption associated with maintaining balance and navigating uneven terrain is often high,' highlighting this as a significant challenge.
The passage explicitly states that 'the energy consumption associated with maintaining balance and navigating uneven terrain is often high,' highlighting this as a significant challenge.
According to the passage, what is an advantage of bipedalism for penguins?
Read this passage:
Penguins, despite being birds, are quintessential examples of bipedal animals. Their upright posture and waddling gait are highly specialized adaptations for their aquatic and terrestrial environments. While not as agile on land as some quadrupeds, their bipedalism allows them to conserve energy during long-distance marches to breeding grounds and offers a higher vantage point in their flat, open habitats.
According to the passage, what is an advantage of bipedalism for penguins?
The passage states that their 'bipedalism allows them to conserve energy during long-distance marches to breeding grounds and offers a higher vantage point in their flat, open habitats.'
The passage states that their 'bipedalism allows them to conserve energy during long-distance marches to breeding grounds and offers a higher vantage point in their flat, open habitats.'
This sentence discusses the evolutionary benefit of bipedalism.
This sentence highlights the challenge in robot design regarding bipedal movement.
This sentence describes an advantage of bipedalism for humans.
The evolution of early hominids was marked by a significant shift towards __________ locomotion, freeing their forelimbs for tool use and carrying offspring.
The context describes freeing forelimbs, which is a key advantage of walking on two legs, i.e., bipedal locomotion.
While many birds are primarily __________ when on the ground, their aerial prowess often overshadows this fundamental mode of movement.
The sentence refers to birds moving on the ground, and 'bipedal' accurately describes their two-legged gait.
The complex biomechanics of __________ gait involve intricate coordination of muscles and balance, allowing for efficient upright posture.
The phrase 'upright posture' strongly indicates the subject is bipedal locomotion.
Robotics engineers continue to grapple with the challenges of designing stable and adaptable __________ robots capable of navigating diverse terrains.
The sentence discusses robots that mimic human-like movement over varied ground, which points to bipedal robots.
Paleontological evidence suggests that some dinosaur species, contrary to earlier assumptions, were fully __________ predators, possessing powerful hind limbs for pursuit.
The mention of 'powerful hind limbs for pursuit' indicates a two-legged stance, fitting the term bipedal.
The philosophical implications of humanity's unique __________ posture have been debated for centuries, linking it to intelligence and the development of culture.
The phrase 'unique posture' in the context of humanity's evolution and intelligence points to bipedalism.
/ 120 correct
Perfect score!
Summary
Bipedal describes any creature or robot that walks using only two legs.
- walks on two legs
- two-legged creature
- uses two limbs for movement
Understand the Etymology
Break down bipedal: 'bi-' means two, and 'ped' relates to foot. This helps in understanding words like bicycle (two wheels) or pedal (foot lever).
Visual Association
Picture a human or a bird walking. Associate the word bipedal directly with that image to strengthen memory.
Contextual Examples
Think of sentences where bipedal fits. For example: 'Humans are bipedal creatures.' or 'Many dinosaurs were bipedal.'
Practice Pronunciation
Say bipedal out loud several times. Pay attention to the stress on syllables: bi-PE-dal. This helps with recall and speaking fluency.
مثال
The toddler is finally becoming a confident bipedal walker, moving from room to room with ease.
محتوى ذو صلة
مزيد من كلمات Animals
bridle
B2هو جهاز التحكم الذي يستخدم للسيطرة على الحصان، بما في ذلك اللجام واللجام.
bullfinch
B2طائر صغير ممتلئ الجسم بمنقار سميك وصدر محمر.
unprimate
C1Describes qualities or behaviors that are not characteristic of primates, such as humans, apes, or monkeys. It is often used to highlight traits that are mechanical, alien, or lack the social and cognitive complexities typically associated with the primate order.
bray
B2To bray refers to the loud, harsh, and jarring cry specifically made by a donkey. In a figurative sense, it describes a person speaking or laughing in a similarly loud, unpleasant, or raucous manner.
whale
A1الحوت حيوان ثديي ضخم يعيش في المحيط. على الرغم من أنه يعيش في الماء، إلا أنه يتنفس الهواء من خلال فتحة النفخ ويشتهر بكونه أكبر حيوان على وجه الأرض.
mare
A1المهرة هي أنثى حصان أو حيوان خيلي بالغ. تستخدم عادة للتمييز بين أنثى الحصان والحصان الذكر (الفحل) أو الحصان الصغير (المهر أو المهرة الصغيرة).
budgie
B2To move or shift slightly, or to change one's opinion or position on an issue, especially when under pressure or persuasion. It is frequently used in negative contexts to emphasize that something is physically stuck or that a person is being stubborn.
antler
C2A deciduous, branched, bony growth found on the heads of deer and their relatives, which is shed and regrown annually. Unlike horns, antlers are living tissue during growth (covered in velvet) and are used primarily for social display and combat during the mating season.
biped
B2البِيْبِد هو كائن يمشي على قدمين. يُستخدم هذا المصطلح غالبًا في علم الأحياء للتمييز بين الحيوانات ذات القدمين.
bison
B2الثور الأمريكي (البيسون) هو ثور بري ضخم ذو فراء كثيف يعيش في أمريكا وأوروبا. له رأس كبير وحدبة.
