Question : Which class of algae is commonly known as brown algae?
Option 1: Rhodophyceae
Option 2: Phaeophyceae
Option 3: Chlorophyceae
Option 4: Chrysophyceae
Correct Answer: Phaeophyceae
Solution : The correct option is Phaeophyceae .
Brown algae, commonly known as Phaeophyceae, belong to the class Phaeophyceae. They are characterised by their brownish colouration due to the presence of the pigment fucoxanthin. Brown algae are primarily marine, large in size, and include well-known species like kelp. They play a vital ecological role in marine environments.
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