The third cleavage of frog development is:

The vegetal hemisphere of an egg consists of:

$A$: In frog,a gray crescent is formed during fertilization.
$R$: It is because the black pigment granules move away from the point of entry of the sperm in the animal half.

What treatment causes a frog tadpole to grow into a giant tadpole?

Epiboly is the process of

If the size of a fertilized egg of a frog is compared with the size of its blastula and gastrula stages,which of the following observations will be correct?