Which plants respond to higher temparature and show higher rate of photosynthesis?

Options

A. `C_(2)` plants
B. `C_(3)` plants
C. `C_(4)` plants
D. All of these

Answer

**Step-by-Step Solution:**

1. **Understanding Photosynthesis and Plant Types**:
- Photosynthesis is the process by which plants convert light energy into chemical energy. There are different pathways for photosynthesis, primarily categorized into C3 and C4 plants.

2. **Defining C3 Plants**:
- C3 plants are those that utilize the Calvin cycle for photosynthesis. They typically thrive in cooler and wetter climates. Examples include rice, oats, and cotton. However, they are not well-adapted to high temperatures and often undergo photorespiration, which is a wasteful process that can reduce the efficiency of photosynthesis.

3. **Defining C4 Plants**:
- C4 plants, on the other hand, are adapted to hot and dry environments. They have a specialized mechanism that allows them to minimize photorespiration and maximize photosynthesis even at higher temperatures. This adaptation includes a unique leaf anatomy known as Kranz anatomy.

4. **Examples of C4 Plants**:
- Common examples of C4 plants include maize (corn) and sugarcane. These plants are known to have a higher rate of photosynthesis in response to increased temperatures.

5. **Conclusion**:
- Therefore, the plants that respond positively to higher temperatures and show a higher rate of photosynthesis are primarily C4 plants.

**Final Answer**: C4 plants such as maize and sugarcane respond to higher temperatures and show a higher rate of photosynthesis.

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