Why are reptiles better adapted to land dwelling than amphibians are?
A) Their two-chambered heart better mixes oxygenated and deoxygenated blood.
B) Their moist skin is used as a respiratory structure.
C) Their lungs have a smaller surface area for gas exchange.
D) Their embryos develop in a uterus.
E) Their scaly skin prevents water loss,
Correct Answer:
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Q40: Cartilaginous fishes differ from lampreys because they:
A)lack
Q41: Why do amphibians need a moist environment?
A)The
Q42: Which characteristic do birds share with mammals?
A)a
Q43: The high body temperature of birds and
Q44: An animal that has a four-chambered heart,
Q46: Birds belong to a related group of
Q47: A tadpole is a(n):
A)bony fish.
B)cartilaginous fish.
C)jawless fish.
D)amphibian.
E)invertebrate
Q48: Why don't reptilian embryos dry out in
Q49: Why can't amphibians be entirely terrestrial?
A)Their digestion
Q50: A terrestrial vertebrate that has scales and
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