The decrease in the number of sperms in semen is called .....x….... and is due to the insufficient amount of …....y…... Select the correct option for X and Y .

Options

A. X - Azoospermia Y - Hyaluronidase
B. X - Oligospermia Y - Acid phosphatase
C. X - Oligospermia Y - Testosterone
D. X - Oligospermia Y - Inhibin

Answer

To solve the question regarding the decrease in the number of sperms in semen and the insufficient amount of a specific substance, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Terms**:
- The question asks for a term that describes a decrease in sperm count in semen.
- We also need to identify the substance whose insufficient amount causes this decrease.

2. **Identifying the Condition**:
- The term for a decrease in sperm count is "Oligospermia." This condition is characterized by a lower than normal sperm count in the semen.

3. **Identifying the Cause**:
- The decrease in sperm count (Oligospermia) is often due to insufficient levels of testosterone. Testosterone is a crucial hormone for the development and maintenance of male reproductive tissues and sperm production.

4. **Final Answer**:
- Therefore, the correct terms to fill in the blanks are:
- X: Oligospermia
- Y: Testosterone

### Summary:
The complete answer to the question is: The decrease in the number of sperms in semen is called **Oligospermia** and is due to the insufficient amount of **Testosterone**.