Question

Choose the incorrect option regarding different types of reproductive cells.

• A. Primary oocyte - 2n
• B. Secondary oocyte - n
• C. Spermatids - 2n
• D. Spermatogonia - 2n

Answer 1

The correct option is C

Spermatids - 2n

The correct option is C.

Explanation of the correct option:

1. Spermatids are haploid (n) cells, not diploid (2n).
2. Primary spermatocytes undergo the process of meiosis I and form haploid secondary spermatocytes.
3. Secondary spermatocytes undergo the process of meiosis II and form haploid spermatids.

Explanation of the incorrect options:

Option A:

1. Primary oocytes are diploid cells (2n).
2. They are produced from the oogonia or gamete mother cell by mitosis.
3. Primary oocytes undergo first meiotic division and produce secondary oocytes.

Option B:

1. Secondary oocytes are haploid cells (n), produced from primary oocytes.
2. Secondary oocytes are immature ovum.

Option D:

1. Spermatogonia are diploid cells (2n).
2. They are the undifferentiated male germ cells.

Final answer: Spermatids are haploid cells (n), not diploid (2n) cells.