Arrange in correct sequence the structures formed during spermatogenesis
a) spermatogonia
b) Secondary spermatocyte
c) Spermatogonial stem cells
c) spermatogonial stem cell
d) primary spermatocyte
e) spermatid

Options

A. (1) c-d-b-a-e
B. (2) c-a-d-b-e
C. (3) a-b-c-d-e
D. (4) c-d-a-b-c

Answer

To arrange the structures formed during spermatogenesis in the correct sequence, we can follow these steps:

### Step-by-Step Solution:

1. **Spermatogonial Stem Cells (C)**: The process begins with spermatogonial stem cells, which are diploid cells that have the potential to divide and differentiate into sperm cells.

2. **Spermatogonia (A)**: The spermatogonial stem cells undergo mitosis to produce spermatogonia. These are also diploid cells and represent the first stage of sperm cell development.

3. **Primary Spermatocyte (D)**: The spermatogonia then undergo a process of differentiation and growth to become primary spermatocytes. These cells are still diploid and are the first meiotic division stage.

4. **Secondary Spermatocyte (B)**: The primary spermatocytes undergo meiosis I, resulting in the formation of secondary spermatocytes. These cells are haploid, meaning they contain half the number of chromosomes.

5. **Spermatids (E)**: Each secondary spermatocyte undergoes meiosis II to produce spermatids. These are also haploid cells and are the final stage before maturation into sperm.

### Final Sequence:
The correct sequence of structures formed during spermatogenesis is:
1. Spermatogonial Stem Cells (C)
2. Spermatogonia (A)
3. Primary Spermatocyte (D)
4. Secondary Spermatocyte (B)
5. Spermatids (E)