A: An Volvox, heterogametes are formed in sexual life cycle.
R: Non-motile (Male) gametes are transferred by water.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
B. If both Assertion & Reason are true and the reason is not the correct explanation of the assertion, then mark (2)
C. If Assertion is true statements but Reason is false then mark (3)
D. If both Assertion and Reason are false statements, then mark (4)

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that in Volvox, heterogametes are formed in the sexual life cycle.
- **Explanation**: Volvox is a type of green algae that reproduces both asexually and sexually. In its sexual reproduction, it produces two types of gametes: male and female. The male gamete is smaller and motile, while the female gamete is larger and non-motile. Therefore, the assertion is true.

2. **Understanding the Reason**: The reason states that non-motile (male) gametes are transferred by water.
- **Explanation**: In Volvox, the male gametes are actually motile, not non-motile. They possess flagella which allow them to swim through water to reach the non-motile female gametes. Thus, this statement is false.

3. **Conclusion**: Since the assertion is true and the reason is false, the correct answer is that the assertion is true, but the reason is false.

### Final Answer:
- The assertion is true, and the reason is false.

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