(a) Rearrange the following in an ascending order of evolutionary tree: Reptiles. salamander, lobe fins and frogs (b) Name two reproductive characters that probably make reptiles more successful than amphibians.

Explanation

(a) Lobe Fins lt Frogs lt Salamander lt Reptiles
(b) Reptiles are more successful than amphibians because
(i) They show internal fertilization
(ii)Their eggs are thick-shelled which do not dry up in sun like those of amphibians
(i) Presence of amnion (embryonic membrane).