Question

The eggs of amphibians can dry out easily because they

• A. Are never encased in jelly
• B. Do not have amnion
• C. Are usually laid on land
• D. Are always fertilised externally

Answer 1

The correct option is B Do not have amnion

Amnion is a membranous structure that covers a newly formed embryo. It gets filled with the amniotic fluid which provides protection to the growing embryo. Eggs of birds, reptiles, and mammals have amnion while those of amphibians do not. This is because amphibian eggs can die of desiccation and are often laid in water to save them from this fate.

So, the correct answer is 'Do not have amnion'.