Where does the first cleavage division of the zygote take place?

$A$ layer of cortical granules is found beneath the

When the cleavage furrow extends from the animal pole to the vegetal pole and does not bisect the egg equally into two blastomeres,the plane of cleavage is:

Polyspermy is generally prevented by which of the following?

Meroblastic cleavage refers to which type of division of egg?

The term $blastocyst$ is applied to the $blastula$ of which one of the following?