Question

Rearrange the following in an ascending order of evolutionary tree, reptiles, salamander, lobefins, frogs. Name two reproductive characters that make reptiles more successful than amphibians.

Answer 1

Answer:

Lobefins → Frogs → Salamander → Reptiles.

Reptiles are more successful than amphibians because:

* Fertilisation is internal.

* They lay fertilised eggs, covered by a hard calcareous shell which do not dry up in the sun.

Answer 2

Lobefins→ frogs → Salamander → Reptiles