Assertion :- Somatic mutations are sometime inheritable.
Reason : Some organism show vegetative propagation.

Options

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

Answer

### Step-by-Step Text Solution

1. **Understanding the Assertion**: The assertion states that "Somatic mutations are sometimes inheritable." To evaluate this, we need to understand what somatic mutations are. Somatic mutations occur in somatic cells, which are all the cells in an organism except for the germ cells (gametes).

2. **Understanding Somatic Mutations**: Generally, somatic mutations are not passed on to offspring because they occur in non-reproductive cells. However, there are exceptions, particularly in organisms that reproduce asexually.

3. **Understanding the Reason**: The reason provided is that "Some organisms show vegetative propagation." Vegetative propagation is a form of asexual reproduction where new individuals are produced from the vegetative parts of a plant (like stems, roots, or leaves). In this process, any somatic mutations that occur can be passed on to the new individuals since they arise from the same parent organism.

4. **Linking Assertion and Reason**: The assertion can be considered true in the context of organisms that reproduce asexually through vegetative propagation. In these cases, somatic mutations can be inherited by the offspring because the offspring are clones of the parent.

5. **Conclusion**: Both the assertion and the reason are correct. The assertion that somatic mutations are sometimes inheritable is true in the context of vegetative propagation, and the reason explains why this is the case.

6. **Final Answer**: Therefore, the correct option is that both the assertion and reason are true, and the reason is the correct explanation of the assertion.