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Brown algae vary in colour from olive gr...

Brown algae vary in colour from olive green to various shades of brown depending upon the amount of the pigment

A

r-phycoerythin

B

violaxanthin

C

laminarin

D

fucoxanthin

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Question**: The question states that brown algae vary in color from olive green to various shades of brown, and asks which pigment is responsible for this variation. 2. **Analyzing the Options**: - **Option R: Phycoerythin**: This is a red pigment found in red algae, not brown algae. Therefore, this option is incorrect. - **Option 2: Viola xanthine**: This is an orange pigment found in some fruits and vegetables, but it is not associated with brown algae. Thus, this option is also incorrect. - **Option 3: Laminarin**: Laminarin is a carbohydrate that serves as a food reserve in brown algae, but it does not contribute to the color variation. Hence, this option is incorrect as well. - **Option 4: Fucoxanthin**: This is a xanthophyll pigment that is responsible for the brown color in brown algae. It varies in concentration, leading to the different shades of brown and olive green observed in these algae. This option is correct. 3. **Conclusion**: The pigment responsible for the color variation in brown algae is Fucoxanthin. **Final Answer**: Fucoxanthin ---
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