The Reptiles are considered to be more advanced than Amphibians with respect to the evolution of ani...........

Environment and Ecology (Easy) Biodiversity

The Reptiles are considered to be more advanced than Amphibians with respect to the evolution of animals. Consider the following statements in this context:

Amphibians breath via the Skin, Gills and lungs, Reptiles breath via Lungs only

Amphibians have Three chambers in heart, Reptiles have four chambers

Amphibians lay Soft eggs surrounded by gel, Reptiles lay hard eggs with shells

Which among the above statements is / are correct?

Only 1 & 2

Only 2 & 3

Only 1 & 3

1, 2 & 3

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Explanation:

Reptiles are the first entirely terrestrial vertebrate class, totally independent from the aquatic habitat for survival. They have excellent evolutionary innovation to get them rid of water life. Their skin is keratinized and impermeable to water whereas amphibian skin is permeable. Due to keratinized skin, the hitherto cutaneous respiration became impossible and respiration became dependent on internal organs such as airways and lungs. Snakes and lizards shed their scales as skin cast.