Very Short Answer. Mention two modifications in Reptiles which are required for terrestrial mode of life.
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Updated on : 2022-09-05
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∙ The two modifications in Reptiles required for terrestrial mode of life are:
a) Presence of Amnion: Reptiles are amniotes that is, they have an extra-embryonic membrane called amnion formed during embryonic development. The amniotic fluid inside the amnion prevents the embryo from drying and also acts as a shock absorber. Thus formation of amnion and presence of amniotic fluid led to less dependence on water for development and allowed amniotes to move to terrestrial habitats.
b) Cleidoic eggs: The eggs in Reptiles have a hard leathery shell, which protect the embryo and permit retention of water and nutrients inside the egg for the developing embryo.