[A] : Synandrous condition is found in curcurbits.
[R] : The male flower of curcurbits, generally, contains five stamens which are laterally fused (anthers and filaments both).

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

To solve the question regarding the synandrous condition in cucurbits and the structure of their male flowers, we can break down the solution into clear steps.

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that "Synandrous condition is found in cucurbits."
- **Explanation**: The synandrous condition refers to the fusion of the stamens in a flower, where both the anthers and filaments are fused together. This condition is indeed observed in cucurbits, such as bitter gourd and cucumber.

2. **Understanding the Reason**: The reason states that "The male flower of cucurbits generally contains five stamens which are laterally fused (anthers and filaments both)."
- **Explanation**: In the male flowers of cucurbits, there are typically five stamens that are fused together. This fusion includes both the anthers and the filaments, which is characteristic of the synandrous condition.

3. **Evaluating the Truth of the Statements**:
- Both the assertion and the reason are true statements. The assertion correctly identifies the presence of the synandrous condition in cucurbits, and the reason accurately describes the structure of the male flower in these plants.

4. **Determining the Relationship**:
- The reason provided is a correct explanation of the assertion. The fact that cucurbits exhibit a synandrous condition is directly supported by the structure of their male flowers, which contain five laterally fused stamens.

5. **Conclusion**: Based on the evaluation, the correct option is that both the assertion and reason are true, and the reason is the correct explanation of the assertion.

### Final Answer:
Both assertion and reason are true, and reason is the correct explanation of assertion.

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