`NADPH_(2)` is generated in noncyclic photophosphorylation through

Options

A. glycolysis
B. photosystem I
C. photosystem II
D. anaerobic respiration

Explanation

To answer the question "NADPH2 is generated in noncyclic photophosphorylation through," we can break down the process step by step.

### Step-by-Step Solution:

1. **Understanding Noncyclic Photophosphorylation**:
- Noncyclic photophosphorylation is a process that occurs in the light-dependent reactions of photosynthesis. It involves the conversion of light energy into chemical energy in the form of ATP and NADPH.

2. **Role of Photosystems**:
- There are two main photosystems involved in noncyclic photophosphorylation: Photosystem II (PSII) and Photosystem I (PSI). Both are essential for the process, but they have different functions.

3. **Photosystem II Activation**:
- When light (photons) is absorbed by Photosystem II, it excites electrons, causing them to be emitted from the chlorophyll molecules. This process also involves the splitting of water molecules (photolysis), which produces oxygen, protons (H+), and electrons.

4. **Electron Transport Chain**:
- The electrons emitted from Photosystem II are transferred through an electron transport chain, ultimately reaching Photosystem I.

5. **Photosystem I Activation**:
- In Photosystem I, the electrons are re-excited by light energy and are then used to reduce NADP+ (nicotinamide adenine dinucleotide phosphate) to form NADPH2.

6. **Formation of NADPH2**:
- The reaction can be summarized as follows:
\[ NADP^+ + 2H^+ + 2e^- \rightarrow NADPH2 \]
- This shows that NADPH2 is produced during the noncyclic photophosphorylation process.

7. **Conclusion**:
- Therefore, the correct answer to the question is that NADPH2 is generated in noncyclic photophosphorylation through **Photosystem II**.

### Final Answer:
**NADPH2 is generated in noncyclic photophosphorylation through Photosystem II.**