Question

Which of the following differentiates spermatogenesis and oogenesis?

• A. Spermatogenesis is mitotic while oogenesis is meiotic
• B. Oogenesis is mitotic while spermatogenesis is meiotic
• C. Spermatogenesis produces gametes while oogenesis does not
• D. Spermatogenesis produces four haploid sperm cells while oogenesis produces one germ cell and more than one polar body
• E. Spermatogenesis involves unequal division of cytoplasm

Answer 1

The correct option is D Spermatogenesis produces four haploid sperm cells while oogenesis produces one germ cell and more than one polar body

Spermatogenesis starts at puberty and after spermatogenesis four haploid sperm cells are produced from a diploid spermatogenic mother cell by meiosis.

Oogenesis works in a different manner. Here, primary oocyte undergoes meiosis-I to form a large haploid secondary oocyte and a small first polar body.

Secondary oocyte undergoes meiosis-II during fertilization resulting in the formation of an ovum (germ cell) and second polar body.

So, the correct option is 'Spermatogenesis produces four haploid sperm cells while oogenesis produces one germ cell and more than one polar body'.