Question

Which of the following cells during gametogenesis is normally diploid?
A. Spermatogonia
B. Secondary polar body
C. Primary polar body
D. Spermatid

Answer 1

Hint:The process of development of gametes consists of a series of cell division involving both mitosis and meiosis, leading to the formation of a haploid gamete. This process occurring in males is known as Spermatogenesis.

Complete Answer:
The Spermatogonia is also known as the Sperm Mother Cells. They are the cells on which further division takes place. Thus the cells are diploid in nature and are stored within the seminiferous tubules. These cells undergo mitosis or equational division to further form diploid cells known as primary spermatocytes.
Considering the other given options:
B. Secondary polar body is formed during the process of oogenesis that is the gametogenesis in females. It is a haploid cell and is formed by the process on meiosis II acting on secondary oocytes. Thus it is not the right option.
The primary polar body is also a haploid cell and is formed as a product of first meiotic division along with the formation of secondary oocytes. Thus it is not an appropriate option.
Spermatids are formed by the division of secondary spermatocytes. The spermatocyte undergoes meiosis II and produces haploid spermatids. Thus it is also not an appropriate option.

Thus from the above-given options, the correct one is A, the diploid cell is Spermatogonia.

Note: The process of oogenesis and spermatogenesis has some marked differences. Spermatogenesis is a continuous process that is initiated at the time of puberty and continues throughout the lifetime of the individual. At the same time, oogenesis is a discontinuous process that occurs in two stages. The first stage happens in the fetal stage itself, where the oocytes are produced and get arrested after the first meiotic division. After attaining puberty, the development restarts.