Question

Which one of the following traits is not a characteristics feature of amphibians?

• A. Requirements of water for reproduction
• B. Amniotic eggs
• C. Thin skin without scales
• D. Cutaneous respiration

Answer 1

The correct option is B Amniotic eggs

A. The amphibians and their eggs have no protective coat to check evaporative water loss. Therefore, they inhabit damp places and breed in water.

B. The fluid in the sac keeps the embryo moist. Because amphibians eggs don't have amnion, the eggs would dry out if they were laid on the land, so amphibians lay their eggs in water.

C. The skin is smooth, moist, rich in multicellular mucous and poison glands. Scales are mostly absent.

D. Respiration takes place by gills, lungs, lining of buccopharyngeal cavity and skin.

So, the correct answer is option B.