In `C_4` plants , the bundle sheath cells

Options

A. have thin walls of facilitate gaseous exchange
B. have large intercellular spaces
C. are rich in PEP carboxylase
D. have a high density of Chloroplast

Answer

To solve the question regarding the characteristics of bundle sheath cells in C4 plants, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding C4 Plants**:
- C4 plants, such as maize and sorghum, have a specialized leaf anatomy known as Kranz anatomy. This adaptation allows them to efficiently fix carbon dioxide in hot and dry environments.

2. **Identifying Bundle Sheath Cells**:
- Bundle sheath cells are located around the vascular bundles (xylem and phloem) in the leaves of C4 plants. They play a crucial role in the photosynthetic process.

3. **Analyzing the Characteristics**:
- **Thin Walls**: This statement is incorrect. Bundle sheath cells have thick walls that are not conducive to gas exchange.
- **Large Intracellular Spaces**: This is also incorrect. Bundle sheath cells typically have very little intracellular space.
- **Rich in PEP Carboxylase**: This statement is incorrect as well. PEP carboxylase is primarily found in the mesophyll cells, not in the bundle sheath cells.
- **High Density of Chloroplasts**: This statement is correct. Bundle sheath cells contain a high density of chloroplasts, which are essential for photosynthesis.

4. **Conclusion**:
- The correct characteristic of bundle sheath cells in C4 plants is that they have a high density of chloroplasts.

### Final Answer:
- The bundle sheath cells in C4 plants have a high density of chloroplasts.