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Questions and Answers
Which of the following is a key adaptation that enables birds to fly?
Which of the following is a key adaptation that enables birds to fly?
- Presence of a urinary bladder for efficient waste storage.
- Wings covered in keratin feathers. (correct)
- Multiple ovaries in females for increased reproductive capacity.
- Large gonads that support prolonged mating rituals.
A bird’s ability to fly efficiently is aided by several adaptations that specifically reduce weight. Which of these is an example of such an adaptation?
A bird’s ability to fly efficiently is aided by several adaptations that specifically reduce weight. Which of these is an example of such an adaptation?
- Presence of a large urinary bladder for storing waste.
- Enlarged gonads during non-breeding seasons.
- Reduction to a single ovary in females. (correct)
- Development of strong teeth for crushing seeds.
Birds have undergone significant anatomical modifications to support flight. Which modification is directly related to reducing body weight for flight?
Birds have undergone significant anatomical modifications to support flight. Which modification is directly related to reducing body weight for flight?
- Absence of a urinary bladder. (correct)
- Development of dense bones for withstanding flight forces.
- Presence of teeth for a varied diet.
- Increased number of taste receptors for food selection.
Considering adaptations for flight, which characteristic would NOT contribute to reducing a bird's overall weight?
Considering adaptations for flight, which characteristic would NOT contribute to reducing a bird's overall weight?
Which of the following reptilian characteristics has been MOST modified in birds to facilitate flight?
Which of the following reptilian characteristics has been MOST modified in birds to facilitate flight?
How does the reduction in size of bird gonads outside of breeding season contribute to their flight capabilities?
How does the reduction in size of bird gonads outside of breeding season contribute to their flight capabilities?
Which of the following is a shared characteristic between reptiles and birds, despite birds' adaptation for flight?
Which of the following is a shared characteristic between reptiles and birds, despite birds' adaptation for flight?
What is the function of keratin in bird feathers, regarding avian flight adaptation?
What is the function of keratin in bird feathers, regarding avian flight adaptation?
How does the absence of teeth in modern birds primarily contribute to their adaptation for flight?
How does the absence of teeth in modern birds primarily contribute to their adaptation for flight?
Which of the described bird characteristics represents a trade-off where an ancestral feature was lost to improve flight capability?
Which of the described bird characteristics represents a trade-off where an ancestral feature was lost to improve flight capability?
If a newly discovered bird species has a relatively large urinary bladder compared to other birds, what can be inferred about its flight capabilities?
If a newly discovered bird species has a relatively large urinary bladder compared to other birds, what can be inferred about its flight capabilities?
How does having only one functional ovary in female birds enhance their adaptation for flight, compared to reptiles which have two?
How does having only one functional ovary in female birds enhance their adaptation for flight, compared to reptiles which have two?
Considering the small size of bird gonads outside the breeding season, how does this relate to their overall energy expenditure?
Considering the small size of bird gonads outside the breeding season, how does this relate to their overall energy expenditure?
Which of the following could be a potential disadvantage of lacking teeth for a bird species?
Which of the following could be a potential disadvantage of lacking teeth for a bird species?
How do keratin feathers primarily support the efficient flight of birds, beyond just forming the wings?
How do keratin feathers primarily support the efficient flight of birds, beyond just forming the wings?
Considering the reptilian anatomy that birds evolved from, what skeletal adaptation is MOST significant for a bird’s flight capability?
Considering the reptilian anatomy that birds evolved from, what skeletal adaptation is MOST significant for a bird’s flight capability?
How might environmental pressures influence the size of gonads in a bird species living in a highly seasonal environment?
How might environmental pressures influence the size of gonads in a bird species living in a highly seasonal environment?
If a bird species re-evolved teeth, what impact would this likely have on its flight capabilities?
If a bird species re-evolved teeth, what impact would this likely have on its flight capabilities?
Which of the following is the MOST likely reason birds lack a urinary bladder?
Which of the following is the MOST likely reason birds lack a urinary bladder?
How might the distribution of keratin in a bird's body be related to its ability to survive in different climates?
How might the distribution of keratin in a bird's body be related to its ability to survive in different climates?
Flashcards
Birds
Birds
Reptilian anatomy modified to enable flight.
Bird's flight adaptation
Bird's flight adaptation
Wings covered in keratin feathers are the primary adaptation.
Weight-reducing adaptations in birds
Weight-reducing adaptations in birds
Birds have these organ reductions to reduce weight for flight.
Toothless bird
Toothless bird
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Study Notes
- Birds possess reptilian anatomy that has been modified to enable flight.
- Numerous bird characteristics represent adaptations improving their ability to fly.
- A primary adaptation includes wings featuring keratin feathers.
- Birds lack a urinary bladder.
- Female birds have only one ovary.
- Birds have small gonads.
- Birds have lost their teeth.
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