Question

Why do fish and frogs lay eggs in hundreds whereas a human produce one in ovum

Answer 1

Fishes and frogs need medium as water for their reproduction so their gamates are prone to the various aquatic organisms.

--------------------------------------------------------------------------------------------------------

so in order to compensate the loss of gamates , they release them in a large number.

Answer 2

Fish lay a large number of eggs because only a few of them, out of thousands, will be fertilized and produce a fish. This is because they are fertilized outside of the body and are highly sensitive to temperature changes and external factors......