Question

According to the classification of algae, 'brown algae' are placed in which class?

• A. Chlorophyceae (Green)
• B. Rhodophyceae (Red)
• C. Phaeophyceae
• D. Cyanophyceae

Hint:

Remember the major classes of algae: \[ \boxed{ \begin{aligned} \text{Green algae} &\rightarrow \text{Chlorophyceae}\\ \text{Brown algae} &\rightarrow \text{Phaeophyceae}\\ \text{Red algae} &\rightarrow \text{Rhodophyceae} \end{aligned} } \] The pigment fucoxanthin is responsible for the brown colour of Phaeophyceae.

Answer 1

The Correct Option is C

Brown algae belong to class Phaeophyceae (division Phaeophyta) and contain the accessory pigment fucoxanthin, which gives them their characteristic brown colour. Common examples include Laminaria, Fucus, and Sargassum.