Assertion : The adult gametophyte is the conspicuous leafy green , photosynthesis plant popularly called moss.
Reason : The mosses, like liverworts, do not exhibit alteraction of generation .

Options

A. If both the assertion and reason are true statement and reason is correct explanation of the assertion .
B. If both the assertion and reason are true statement but reason is not a correct explanation of the assertion .
C. If the assertion is true but the reason is a false statement.
D. If both assertion and reason are false statements.

Explanation

To solve the question, we need to analyze both the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that the adult gametophyte is the conspicuous leafy green, photosynthetic plant popularly called moss.
- In mosses, the gametophyte is indeed the dominant phase of the life cycle, and it is the part that is typically green and photosynthetic. This is true.

2. **Understanding the Reason**:
- The reason states that mosses, like liverworts, do not exhibit alternation of generations.
- However, this statement is incorrect. Mosses do exhibit alternation of generations, which means they have both a haploid gametophyte stage and a diploid sporophyte stage in their life cycle.

3. **Evaluating the Truth of Assertion and Reason**:
- Since the assertion is true and the reason is false, we can conclude that the assertion stands correct on its own, but the reason does not support it.

4. **Choosing the Correct Option**:
- Based on the analysis, the correct answer is that the assertion is true, but the reason is false. This corresponds to option 3.

### Final Answer:
The assertion is true, but the reason is false. Therefore, the correct answer is option 3.

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