In photosynthesis, light independent reactions take place at

Options

A. Stromal matrix
B. Thylakoid lumen
C. Photosystem-I
D. Photosystem-II

Answer

**Step-by-Step Solution:**

1. **Understanding Photosynthesis**: Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. This process occurs in two main stages: light-dependent reactions and light-independent reactions (also known as dark reactions).

2. **Identifying Light-Independent Reactions**: Light-independent reactions do not require light directly to occur. Instead, they utilize the products generated from the light-dependent reactions, specifically ATP and NADPH.

3. **Location of Light-Independent Reactions**: The light-independent reactions take place in the chloroplasts of plant cells. More specifically, these reactions occur in the **stroma**, which is the fluid-filled space surrounding the thylakoids in the chloroplast.

4. **Reason for Location**: The stroma contains all the necessary enzymes and substrates required for the light-independent reactions to occur. This is why it is the site for these reactions.

5. **Conclusion**: Based on the information provided, the correct answer to the question "In photosynthesis, light independent reactions take place at" is the **stroma (stromal matrix)** of the chloroplast.

**Final Answer**: The light-independent reactions take place at the **stromal matrix** of the chloroplast.

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