[A] : Testes are attached to abdominal wall by inguinal canal, it is drawn into scrotum during 7th month of pregnancy.
[R]: Leydig cells secrete androgens like testosterone.

Options

A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**: The assertion states that "testes are attached to the abdominal wall by the inguinal canal, and they are drawn into the scrotum during the 7th month of pregnancy."
- **Explanation**: During embryonic development, the testes form in the abdominal cavity. They descend into the scrotum through the inguinal canal around the 7th month of gestation. This descent is crucial for temperature regulation, which is necessary for proper sperm production.

2. **Understanding the Reason (R)**: The reason states that "Leydig cells secrete androgens like testosterone."
- **Explanation**: Leydig cells, located in the interstitial spaces of the testes, produce testosterone, which is essential for the development of male secondary sexual characteristics and for spermatogenesis.

3. **Evaluating the Truth of A and R**: Both statements are true.
- **Assertion (A)**: True, as the descent of the testes through the inguinal canal into the scrotum is a well-documented process.
- **Reason (R)**: True, as Leydig cells are known to secrete testosterone, which is a key androgen.

4. **Determining the Relationship Between A and R**: While both A and R are true, R does not explain A.
- **Explanation**: The assertion discusses the physical descent of the testes, while the reason discusses hormonal secretion. They are related to male reproductive physiology but do not directly explain one another.

5. **Conclusion**: Since both A and R are true but R is not the correct explanation of A, the correct answer is that both statements are true, but R is not the correct explanation of A.

### Final Answer:
Both A and R are true, but R is not the correct explanation of A.

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