Members of phaeophyceae show characteristic class colour due to the dominance of

Options

A. Chlorophyll a
B. Chlorophyll c
C. `beta`-carotene
D. Fucoxanthin

Answer

### Step-by-Step Solution:

1. **Identify the Class**: The question refers to members of the class Phaeophyceae, which is commonly known as brown algae.

2. **Understand the Coloration**: Brown algae are characterized by their brown color, which is primarily due to the presence of specific pigments.

3. **List the Pigments**: The main pigments found in brown algae include:
- Chlorophyll A
- Chlorophyll C
- Beta-Carotene
- Fucoxanthin

4. **Determine the Dominant Pigment**: While chlorophyll A and C are present, they do not give the brown color. The pigment responsible for the characteristic brown color in Phaeophyceae is Fucoxanthin.

5. **Conclude the Answer**: Therefore, the members of Phaeophyceae show their characteristic color due to the dominance of **Fucoxanthin**.

### Final Answer:
Members of Phaeophyceae show characteristic class color due to the dominance of **Fucoxanthin**.

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