Which of the following statement is not a special feature`C_4` plants
They have special type of leaf anatomy
They tolerate higher temperature
They show photorespiration
They show response to high ligh intensity

Options

A. They have special type of leaf anatomy
B. They tolerate higher temperature
C. They show photorespiration
D. They show response to high ligh intensity

Answer

### Step-by-Step Solution:

1. **Understanding C4 Plants**: C4 plants are a specific group of plants that have adapted to high light intensity and temperature conditions. They possess unique features that differentiate them from C3 plants.

2. **Analyzing the Options**:
- **Option 1**: "They have special type of leaf anatomy."
- C4 plants have a distinct leaf anatomy known as Kranz anatomy, which includes both mesophyll and bundle sheath cells. This is a characteristic feature of C4 plants.
- **Option 2**: "They tolerate higher temperature."
- C4 plants are known for their ability to thrive in high-temperature environments, making this statement true.
- **Option 3**: "They show photorespiration."
- C4 plants are specifically adapted to minimize photorespiration. Unlike C3 plants, they have mechanisms that reduce the occurrence of photorespiration, making this statement false.
- **Option 4**: "They show response to high light intensity."
- C4 plants are well adapted to high light conditions, thus this statement is also true.

3. **Identifying the Incorrect Statement**:
- The only statement that does not accurately describe a special feature of C4 plants is "They show photorespiration." Therefore, this is the correct answer to the question.

### Conclusion:
The statement that is not a special feature of C4 plants is: **"They show photorespiration."**

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