Yellow-green pigment is found in

Options

A. Xanthophyta
B. Phaeophyta
C. Rhodophyta
D. Chlorophyta.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks about the organism that contains a yellow-green pigment. The options provided are xanthophyta, pheophyta, rhodophyta, and chlorophyta.

2. **Analyzing Each Option:**
- **Option A: Xanthophyta**
- Xanthophyta, also known as yellow-green algae, contain yellow-green pigments primarily due to the presence of carotenoids. This makes them the correct answer.

- **Option B: Pheophyta**
- Pheophyta, or brown algae, contain brown pigments due to the presence of phycocyanin and fucoxanthin, which gives them a brown color. Thus, this option is incorrect.

- **Option C: Rhodophyta**
- Rhodophyta, or red algae, are characterized by their red color, which is due to the pigment phycoerythrin. Therefore, this option is also incorrect.

- **Option D: Chlorophyta**
- Chlorophyta, or green algae, contain green pigments (chlorophyll A and B), which gives them their green color. This option is incorrect as well.

3. **Conclusion:**
After analyzing all the options, the only group that contains a yellow-green pigment is **Xanthophyta** due to the presence of carotenoids.

**Final Answer:**
The yellow-green pigment is found in **Xanthophyta**.

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