Which of the following pigments are found in brown algae?

Options

A. Chl a, Chl c
B. Chl a, Chl d
C. Chl a, Chl c ad fucoxanthin
D. Chl a, phycoerythrin

Explanation

To answer the question regarding the pigments found in brown algae, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Group of Algae**: Brown algae belong to the group known as Phaeophyceae.

2. **List Common Pigments in Brown Algae**: The main pigments found in brown algae include:
- Chlorophyll A
- Chlorophyll C
- Fucoxanthin (a type of carotenoid)

3. **Analyze the Options Given**:
- **Option 1**: Chlorophyll A and Chlorophyll C
- **Option 2**: Chlorophyll A and Chlorophyll D
- **Option 3**: Chlorophyll A, Chlorophyll C, and Fucoxanthin
- **Option 4**: Chlorophyll A and Phycoerythrin

4. **Determine the Correct Option**:
- Option 1 includes two pigments but misses Fucoxanthin.
- Option 2 includes Chlorophyll D, which is not found in brown algae.
- Option 3 includes all three pigments: Chlorophyll A, Chlorophyll C, and Fucoxanthin, which are indeed present in brown algae.
- Option 4 includes Phycoerythrin, which is found in red algae, not brown algae.

5. **Conclusion**: The correct answer is **Option 3: Chlorophyll A, Chlorophyll C, and Fucoxanthin**.