The diagrams below are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.

Which parts of P and Q fuse to complete the biological process?

Which parts of P and Q fuse to complete the biological process?

A.

III and I

B.

IV and I

C.

III and II

D.

IV and II

Correct answer is A

P is a sperm cell whose nucleus (iii) then fuses with the  egg plasma membrane (i) of the ovum (Q) and injects its nucleus and other organelles into the egg cytoplasm.