Meroblastic cleavage refers to which type of division of egg?

Fertilization is the fusion of:

Assertion : During fertilization,only the head of the spermatozoa enters the egg.
Reason : If several spermatozoa hit the egg at the same time,all can enter the egg.

Where does fertilization of the ovum occur in mammals?

Statement-$I$: The trophoblast layer gets attached to the endometrium and the inner cell mass gets differentiated as the embryo.
Statement-$II$: The morula becomes embedded in the endometrium of the uterus.

Corpus luteum secretes.....