The diagrams below are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.
Which of the following statements about P and Q is correct?
A.
Both cells are structures for asexual reproduction
B.
Both cells normally belong to the same individual
C.
Both cells are found in plants
D.
The union of both cells gives rise to a new mammal
Correct answer is D
P - sperm cell:
III. Nucleus IV. Mitochondria
Q- Egg cell:
I. Nucleus II. Cytoplasm.
Sperm-egg fusion is a cell-cell membrane fusion event essential for the propagation of sexually reproducing organisms.