Rachis is absent in :-

Options

A. Simple leaf
B. Palmately compound leaf
C. Pinnately compound leaf
D. Both (1) and (2)

Answer

To determine where the rachis is absent, we need to analyze the types of leaves mentioned in the question: simple leaves, palmately compound leaves, and pinnately compound leaves.

### Step-by-Step Solution:

1. **Understanding Rachis**:
- The rachis is the main axis or central stem of a pinnately compound leaf. It connects the leaflets to the petiole (the stalk that attaches the leaf to the stem).

2. **Analyzing Simple Leaves**:
- A simple leaf consists of a single blade and does not have leaflets. Since there is no division into leaflets, there is no rachis present in a simple leaf.

3. **Analyzing Palmately Compound Leaves**:
- In palmately compound leaves, the leaflets emerge from a single point at the end of the petiole, resembling the fingers of a hand. There is no central axis or rachis in this type of leaf.

4. **Analyzing Pinnately Compound Leaves**:
- Pinnately compound leaves have a rachis that connects multiple leaflets along its length. Therefore, the rachis is present in pinnately compound leaves.

5. **Conclusion**:
- Since the rachis is absent in both simple leaves and palmately compound leaves, the correct answer to the question is "both 1 and 2".

### Final Answer:
The rachis is absent in: **Both simple leaves and palmately compound leaves**.

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