Which of the following pigment is universal photosynthsis pigment ?

Options

A. Chlorophyll-a
B. Chlorophyll-b
C. Chlorophyll-c
D. Chlorophyll-d

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks for the pigment that is considered the universal photosynthesis pigment. This means we are looking for a pigment that is widely present and plays a crucial role in the process of photosynthesis across various organisms.

2. **Identifying the Options:**
We have four options to choose from, which likely include different types of chlorophyll and possibly other pigments.

3. **Defining Universal Photosynthesis Pigment:**
A universal photosynthesis pigment is one that is found in a wide range of photosynthetic organisms and is essential for the process of photosynthesis.

4. **Analyzing Each Option:**
- **Option A: Chlorophyll A** - This pigment is known to be present in all plants, algae, and some bacteria. It plays a direct role in photosynthesis, particularly in the light reactions.
- **Option B: Chlorophyll B** - While this pigment assists in photosynthesis, it is not found in all photosynthetic organisms.
- **Option C: Chlorophyll C** - This pigment is not universally present and is found in specific groups of algae.
- **Option D: Other Pigments** - These are generally not involved in the primary light reactions of photosynthesis.

5. **Conclusion:**
Based on the analysis, the only pigment that fits the criteria of being a universal photosynthesis pigment is **Chlorophyll A**. Therefore, the correct answer is **Option A: Chlorophyll A**.