Plants with scotoactive stomate perform

Options

A. C_(4) photosynthesis
B. CAM photosynthesis
C. C_(3) photosynthesis
D. Anoxygenic photosynthesis.

Answer

### Step-by-Step Solution

1. **Understanding Scotoactive Stomata**:
- Scotoactive stomata are specialized stomata that open during the night and close during the day. This adaptation helps reduce water loss during the hotter daytime hours.

2. **Identifying Photosynthesis Types**:
- There are different types of photosynthesis mechanisms in plants:
- **C3 Photosynthesis**: This is the most common form of photosynthesis where CO2 is fixed into a three-carbon compound.
- **C4 Photosynthesis**: This pathway is adapted to high light intensity and temperature, where CO2 is fixed into a four-carbon compound.
- **CAM Photosynthesis**: Crassulacean Acid Metabolism (CAM) is a photosynthetic adaptation where plants open their stomata at night to collect CO2 and close them during the day to minimize water loss.
- **N-oxygenic Photosynthesis**: This is a type of photosynthesis that does not produce oxygen, typically seen in certain bacteria.

3. **Linking Scotoactive Stomata to Photosynthesis**:
- Since scotoactive stomata open at night, they are most closely associated with CAM photosynthesis. In CAM plants, the stomata are closed during the day to conserve water and open at night to take in CO2, which is then stored and used during the day for photosynthesis.

4. **Conclusion**:
- Based on the adaptation of scotoactive stomata and the characteristics of the different types of photosynthesis, the correct answer to the question is **b. CAM photosynthesis**.

### Final Answer
**b. CAM photosynthesis**