When the amphibians first moved onto land,there was
A) an environment relatively free from predators.
B) a readily available food source.
C) competition with the reptiles.
D) An environment relatively free from predators and a readily available food source are both correct.
Correct Answer:
Verified
Q14: The most fully terrestrial salamanders belong to
Q15: Frogs and toads belong to the amphibian
Q16: Fertilization is always internal in caecilians; larval
Q17: True toads belong to the family
A)Hylidae.
B)Dendrobatidae.
C)Rhynchocephalia.
D)Ranidae.
E)Bufonidae
Q18: Female salamanders have a special pouch,the _,in
Q20: Members of the amphibian order Anura have
Q21: Gas exchange across the skin is called
A)ram
Q22: In amphibians,a _ valve in the conus
Q23: Unlike other vertebrates,amphibians have contractile vessels called
Q24: Larval amphibians are usually _ in their
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