Question

Why do fish and frog lay eggs in hundreds, whereas a hen lays only one egg at a time

Answer 1

Explanation:

Frogs and fish mostly lay their eggs in water; larvae produced by them could flow along with water so to protect their generation they have to lay thousands of eggs at a time while hens lay eggs on land, so they do not need to lay many eggs. Organisms having internal fertilization, like hen, produce one egg at a time.

Answer 2

Answer:

external fertilisation

Explanation:

Fertilisation takes place when spawn of unfertilized eggs were laid by female.

there is less chance of survival.