Assertion. The leaflet of a compound leaf is not a true leaf.
Reason. There is no bud in the axil of a leaflet.

Options

A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
B. If both Assertion and 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 and Reason are false.

Answer

To analyze the assertion and reason provided in the question, we can break it down into a step-by-step solution:

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "the leaflet of a compound leaf is not a true leaf."
- In botanical terms, a true leaf is defined as a leaf that arises from a node on the stem and has a bud in its axil. Leaflets, on the other hand, are parts of a compound leaf that are not independently attached to the stem.

**Hint**: Recall the definition of a true leaf and how leaflets differ from them.

2. **Understanding the Reason**:
- The reason given is "there is no bud in the axil of a leaflet."
- This is accurate because leaflets do not have axillary buds. Instead, the axil of a leaflet is part of the compound leaf structure, which has a single bud at the base of the entire compound leaf.

**Hint**: Consider the structure of a compound leaf and where the buds are located.

3. **Linking Assertion and Reason**:
- Both the assertion and the reason are true statements. The assertion correctly identifies that leaflets are not true leaves, and the reason explains why this is the case, as leaflets lack the axillary bud that characterizes true leaves.

**Hint**: Think about how the reason supports the assertion.

4. **Conclusion**:
- Since both the assertion and reason are true, and the reason correctly explains the assertion, we can conclude that the correct answer is that both statements are true, and the reason is the correct explanation for the assertion.

**Hint**: Look for options that indicate both statements are true and that the reason supports the assertion.

### Final Answer:
Both the assertion and the reason are true, and the reason is the correct explanation for the assertion.