Of the following group which secrete and deposit calcium carbonate and appear like corals
A
Red algae
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B
Brown algae
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C
Blue green algae
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D
All of these
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Solution
The correct option is A Red algae Some red algae deposit calcium carbonate on their surface. They are called coralline algae e.g., Corallina. They help to develop coral reefs alongwith corals.