The rachis in palmately compound leaves

Options

A. is absent
B. represents petiole
C. represents midribofleaf
D. branched

Answer

### Step-by-Step Solution:

1. **Understanding Rachis**: The rachis is the central axis of a compound leaf. It connects the leaflets to the main stem and is an important structural component in pinnately compound leaves.

2. **Pinnately Compound Leaves**: In pinnately compound leaves, the rachis is formed from the midrib of the leaf. The leaflets are arranged along this common axis, allowing for a clear structure where the leaflets extend from the rachis.

3. **Palmately Compound Leaves**: In contrast, palmately compound leaves do not have a rachis in the same way. Instead of a central axis, the leaflets are attached at a single point at the tip of the petiole. This means that there is no extended midrib or common axis.

4. **Conclusion**: Therefore, in palmately compound leaves, the rachis is absent. The leaflets radiate out from a common point rather than being arranged along a central axis.

### Final Answer:
The rachis in palmately compound leaves is absent.

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