Find out the wrong statement

Options

A. CAM plants open their stomata at night and close during day time
B. Spilitting of water takes place in the chloroplasts membrane
C. PSI is found in stromal as well as granal thylakoids
D. Current availability of `CO_(2)` levels is limiting to the `C_(3)` plants

Answer

To find the wrong statement among the provided options, let's analyze each statement step by step:

1. **Statement 1: CAM plants open their stomata at night and close during the daytime.**
- CAM (Crassulacean Acid Metabolism) plants are adapted to arid conditions and indeed open their stomata at night to minimize water loss. During the day, they close their stomata to conserve water.
- **Conclusion:** This statement is true.

2. **Statement 2: Splitting of water takes place in the chloroplast membrane.**
- The splitting of water, known as photolysis, occurs in the thylakoid membranes of chloroplasts, specifically near photosystem II, not in the chloroplast membrane itself.
- **Conclusion:** This statement is false, making it the wrong statement.

3. **Statement 3: PS1 is found in stromal as well as granal thylakoids.**
- Photosystem I (PS1) is indeed located in both the stroma and the granal thylakoids, while Photosystem II (PS2) is found only in the granal thylakoids.
- **Conclusion:** This statement is true.

4. **Statement 4: Current availability of carbon dioxide levels is limiting to C3 plants.**
- C3 plants do have a limitation on the availability of carbon dioxide, as their photosynthetic rate increases with CO2 concentration up to a certain point, after which it levels off.
- **Conclusion:** This statement is true.

### Final Answer:
The wrong statement is: **"Splitting of water takes place in the chloroplast membrane."**