Question

Of the following groups, which secrete and deposit calcium carbonate and appear like corals?

• A. Red algae
• B. Brown algae
• C. Blue green algae
• D. All of the above
• E. None of the above

Answer 1

The correct option is A Red algae

Option A is correct, as red algae in order Corallinales, which are characterized by a type of thallus, that is hard because of calcareous or calcium carbonate deposits contained within the cell walls. The colours of these algae are mostly pink, or some shade of red, but certain species can be purple, yellow, blue, white or gray-green. Coralline algae looks like corals, because of its calcareous deposits.

Thus, the correct answer is option A.