Splitting of water is associated with

Options

A. photosystem I
B. lumen of thylakoid
C. both photosystem I and II
D. inner surface of thylakoid membrane

Answer

To answer the question "Splitting of water is associated with," we can break down the solution into clear steps:

### Step-by-Step Solution:

1. **Understanding Photosynthesis**: Photosynthesis is the process by which plants convert light energy into chemical energy, producing food (glucose) and oxygen from carbon dioxide and water.

2. **Identifying the Types of Reactions**: Photosynthesis consists of two main types of reactions:
- **Light Reactions**: These occur in the presence of light and take place in the thylakoids of chloroplasts.
- **Dark Reactions**: These do not require light directly and occur in the stroma of chloroplasts.

3. **Location of Light Reactions**: The light reactions occur in the thylakoid membranes, where sunlight is captured and used to split water molecules.

4. **Splitting of Water (Photolysis)**: The process of splitting water into hydrogen and oxygen is known as **photolysis**. This reaction is crucial for the light-dependent reactions of photosynthesis.

5. **Role of Photosystems**: There are two types of photosystems involved in the light reactions:
- **Photosystem I (PSI)**
- **Photosystem II (PSII)**

6. **Association of Water Splitting**: The splitting of water (photolysis) is specifically associated with **Photosystem II (PSII)**. This photosystem is located on the inner surface of the thylakoid membrane.

7. **Conclusion**: Therefore, the correct answer to the question is that the splitting of water is associated with **Photosystem II**.

### Final Answer:
Splitting of water is associated with **Photosystem II**.

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