Assertion :- During meiosis-I there is no division of chromosome.
Reason:- During meiosis-I there is separation and movement of homologous, in order to reduce thenumber of chromosome half in daughter cells.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion
C. If Assertion is True but the Reason is False
D. If both Assertion & Reason are false.

Answer

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

### Step 1: Understand the Assertion
- The assertion states: "During meiosis-I there is no division of chromosome."
- In meiosis-I, homologous chromosomes are separated, but the chromatids remain attached. Therefore, the assertion is correct.

### Step 2: Understand the Reason
- The reason states: "During meiosis-I there is separation and movement of homologous chromosomes in order to reduce the number of chromosomes half in daughter cells."
- This statement is also correct. During meiosis-I, homologous chromosomes are separated, which reduces the chromosome number in the daughter cells from diploid (2n) to haploid (n).

### Step 3: Analyze the Relationship
- The assertion is true, and the reason is true as well. Furthermore, the reason correctly explains the assertion because the separation of homologous chromosomes in meiosis-I leads to the reduction of chromosome number.

### Conclusion
- Since both the assertion and reason are true, and the reason provides a correct explanation for the assertion, the correct answer is:
**Option 1: Both assertion and reason are true, and reason is the correct explanation of assertion.**

---