Pigments required for light reaction of photosynthesis are present in

Options

A. Stroma
B. Lumen
C. Ribosomes
D. Thylakoids

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:** The question asks where the pigments required for the light reaction of photosynthesis are located.

2. **Identifying the Options:** The options provided are:
- Stroma
- Lumen
- Ribosomes
- Thylakoids

3. **Analyzing Each Option:**
- **Stroma:** The stroma is the fluid-filled space in the chloroplast where the dark reactions (Calvin cycle) occur. It does not contain the pigments needed for the light reactions. Therefore, this option is incorrect.
- **Lumen:** The lumen refers to the inner space of the thylakoid membranes. While it plays a role in the light reactions, the pigments themselves are not located here. Thus, this option is also incorrect.
- **Ribosomes:** Ribosomes are cellular structures responsible for protein synthesis and are not involved in the light reactions of photosynthesis. This option is incorrect.
- **Thylakoids:** Thylakoids are membrane-bound structures within chloroplasts where the light reactions of photosynthesis take place. They contain chlorophyll and other pigments that capture light energy. Therefore, this option is correct.

4. **Conclusion:** The pigments required for the light reaction of photosynthesis are present in the thylakoids.

**Final Answer:** Thylakoids

---