Kranz anatomy occurs in

Options

A. flower
B. root
C. leaf
D. stem

Answer

**Step-by-Step Solution:**

1. **Understanding Kranz Anatomy**: Kranz anatomy refers to a specific structural arrangement found in certain plants, particularly those that utilize the C4 photosynthetic pathway.

2. **Identifying the Location**: The question asks where Kranz anatomy occurs. The options provided are flower, root, leaf, and stem.

3. **Recognizing C4 Plants**: Kranz anatomy is primarily associated with C4 plants. These plants have a unique leaf structure that facilitates efficient photosynthesis in conditions of high light intensity and temperature.

4. **Cell Types Involved**: In Kranz anatomy, there are two main types of cells: mesophyll cells and bundle sheath cells. Mesophyll cells are involved in the initial capture of carbon dioxide, while bundle sheath cells surround the vascular bundles and play a crucial role in the C4 pathway.

5. **Characteristics of Bundle Sheath Cells**:
- Bundle sheath cells are generally larger and contain a high number of chloroplasts.
- They have thick walls that are impervious to gas exchange.
- Grana (the stacks of thylakoids in chloroplasts) are absent in these cells, which is a distinctive feature.

6. **Conclusion**: Given the characteristics and functions of Kranz anatomy, it is clear that it occurs in the leaves of C4 plants. Therefore, the correct answer to the question is **leaf**.

**Final Answer**: Kranz anatomy occurs in **leaf**.

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