Light reaction of Photosynthesis occurs inside

Options

A. stroma
B. Grana
C. Endoplasmic reticulum
D. Cytoplasm

Answer

**Step-by-Step Solution:**

1. **Understanding Photosynthesis**: Photosynthesis is the process by which plants convert light energy into chemical energy. This process primarily occurs in two stages: the light reaction and the dark reaction.

2. **Identifying the Light Reaction**: The light reaction is the first stage of photosynthesis where light energy is captured and converted into chemical energy. The main products of this reaction are ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate).

3. **Location of Light Reaction**: The light reaction occurs in specific structures within the chloroplasts of plant cells.

4. **Chloroplast Structure**: Chloroplasts have an outer membrane and an inner membrane. Inside the inner membrane, there are flattened sac-like structures called thylakoids.

5. **Thylakoids and Grana**: Thylakoids are arranged in stacks known as grana (singular: granum). Each thylakoid can be thought of as a "coin," and the entire stack of thylakoids forms the grana.

6. **Conclusion**: Therefore, the light reaction of photosynthesis occurs in the grana of the chloroplasts.

**Final Answer**: The light reaction of photosynthesis occurs inside the grana of chloroplasts.

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