Eunuchoidism is due to hyposecretion of `"___________"`

Options

A. Testosterone
B. Progesterone
C. Estrogen
D. Prolactin

Answer

**Step-by-Step Solution:**

1. **Understanding Eunuchoidism**: Eunuchoidism is a condition characterized by the lack of secondary sexual characteristics in males. This condition typically arises during puberty when the body is expected to undergo changes due to hormonal influences.

2. **Identifying the Hormones Involved**: The hormones primarily responsible for male secondary sexual characteristics include testosterone, estrogen, progesterone, and prolactin. However, testosterone is the key hormone that influences male development.

3. **Defining Hyposecretion**: Hyposecretion refers to the inadequate secretion of a hormone from its gland. In the case of eunuchoidism, this means that there is not enough testosterone being produced.

4. **Role of Testosterone**: Testosterone is produced in the testes and is crucial for various functions, including the descent of the testes, development of male secondary sexual characteristics (such as facial hair, deep voice, and muscle growth), and the process of spermatogenesis (formation of sperm).

5. **Conclusion**: Given that eunuchoidism is directly related to the lack of male secondary sexual characteristics and the failure of spermatogenesis, it is clear that the condition is due to the hyposecretion of testosterone.

**Final Answer**: Eunuchoidism is due to hyposecretion of **testosterone**.

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