Question

Which of the following is the incorrect character of brown algae?

• A. Presence of chl a and b.
• B. It remain attached to substratum.
• C. Presence of chl a and c.
• D. Presence of fucoxanthin.

Answer 1

The correct option is A Presence of chl a and b.

Brown algae belong to the class Fucophyceae, which is formerly known as Phaeophyceae. In brown algae, the photosynthetic pigments are Chlorophyll a, c and carotenoids.

They vary in colour from Olive green to various shades of brown depending upon the amount of xanthophyll pigment "fucoxanthin" present in them.

The vegetative body of brown algae such as in the order Laminariales is morphologically distinguished into holdfast, stipe and blade. The holdfast helps in the attachment of the thallus to the substratum. Chlorophyll a and b are present in green algae.

So, the correct answer is A.