Question

Which of the following is diploid?

• A. Secondary spermatocytes
• B. Spermatozoa and ova
• C. Spermatogonia, oogonia, primary spermatocyte
• D. Secondary oocytes

Answer 1

The correct option is C Spermatogonia, oogonia, primary spermatocyte

The primary sex organs, the testis in males and the ovaries in females, produce gametes, i.e., sperms and ovum, respectively, by the process called as gametogenesis.
In testis, Spermatogonia dipoid cell differentiates to form primary spermatocytes. Primary spermatocytes undergo meiosis division to from haploid sperm.
In oogenesis gamete mother cells (oogonia) which contains 46 chromosomes differentiates to form primary oocytes. The primary oocytes successively undergo meiosis I to form haploid secondary oocytes.
Thus, during gametogenesis in humans, Spermatogonia and primary spermatocyte will be diploid in males and oogonia will be diploid in females.

Thus, the correct answer is option C.