Pigments which are not found in higher plants are

Options

A. Chlorophyll -a
B. Chlorophyll - b
C. Carotenoids
D. Phycobilins

Answer

To determine which pigments are not found in higher plants, we will analyze the given options one by one.

### Step-by-Step Solution:

1. **Understanding Pigments**:
- Pigments are substances that absorb light at different wavelengths. They play a crucial role in photosynthesis by capturing light energy.

2. **Identifying the Pigments in Higher Plants**:
- Higher plants typically contain several types of pigments, including:
- **Chlorophyll a**: This pigment is responsible for the blue-green color and is essential for photosynthesis.
- **Chlorophyll b**: This pigment contributes to the yellow-green color and assists in capturing light energy.
- **Carotenoids**: These pigments provide yellow to yellow-orange colors and also aid in photosynthesis by capturing light energy.
- **Xanthophylls**: These are a type of carotenoid that gives a yellow color.

3. **Analyzing the Options**:
- **Option A: Chlorophyll a**: Present in higher plants.
- **Option B: Chlorophyll b**: Present in higher plants.
- **Option C: Carotenoids**: Present in higher plants.
- **Option D: Phycobilins**: These pigments are not found in higher plants; they are typically found in cyanobacteria (blue-green algae) and are responsible for blue coloration.

4. **Conclusion**:
- The pigment that is not found in higher plants is **Phycobilins**.

### Final Answer:
Phycobilins are the pigments that are not found in higher plants.

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