Assertion : Reduction division, in Selaginella, occurs during microspore formation only.
Reason : It has been proved experimentally by Zacharich in 1963.

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 assertion-reason question regarding Selaginella, we will analyze both the assertion and the reason step by step.

### Step 1: Understand the Assertion
The assertion states that "Reduction division, in Selaginella, occurs during microspore formation only."

**Analysis**:
- Selaginella is known for its heterospory, which means it produces two different types of spores: microspores and megaspores.
- In the process of spore formation, reduction division (meiosis) occurs during the formation of both microspores and megaspores, not just microspores.

**Conclusion**: The assertion is **false**.

### Step 2: Understand the Reason
The reason states that "It has been proved experimentally by Zacharich in 1963."

**Analysis**:
- While Zacharich's work may have contributed to our understanding of Selaginella and its reproductive processes, the assertion itself is incorrect.
- The reason does not provide a valid justification for the assertion since the assertion is already false.

**Conclusion**: The reason is also **false**.

### Step 3: Determine the Relationship Between Assertion and Reason
Now that we have established that both the assertion and the reason are false, we can conclude the relationship between them.

**Conclusion**: Both the assertion and the reason are false statements.

### Final Answer
The correct option for this assertion-reason question is that **both assertion and reason are false statements**.

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