Which of the following is essential for birds to maintain their high metabolic rate?
A) Skin that is used as a respiratory structure
B) Hollow bones, which decrease body mass
C) Embryonic development in a shelled amniotic egg
D) A four- chambered heart, which maximizes oxygen delivery
E) Extraordinary coordination by a well- developed nervous system
Correct Answer:
Verified
Q48: Which of the following is TRUE of
Q49: To prevent dehydration, reptiles have
A) scaly skin.
B)
Q50: An animal that has a four- chambered
Q51: Why have reptiles successfully adapted to land?
A)
Q52: Birds belong to a related group of
Q54: Why can't amphibians be entirely terrestrial?
A) Their
Q55: A marsupial is a(n)
A) mollusk.
B) bird.
C) reptile.
D)
Q56: Which characteristic do birds share with mammals?
A)
Q57: Why do amphibians need a moist environment?
A)
Q58: A terrestrial vertebrate that has scales and
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