Question

Assertion (A): In Rhodophyceae, food is stored as floridean starch. Reason (R): Floridean starch is similar to amylopectin and glycogen in structure.

• (A) and (R) are correct, and (R) is the correct explanation of (A).
• (A) and (R) are correct, but (R) is not the correct explanation of (A).
• (A) is correct, but (R) is not correct.
• (A) is not correct, but (R) is correct.

Hint:

Floridean starch is an important carbohydrate in red algae, functionally similar to glycogen but differs from typical starch found in green plants.

Answer 1

The Correct Option is A

Step 1: Understanding Floridean Starch Floridean starch is the primary storage polysaccharide in Rhodophyceae (Red Algae). It is chemically similar to amylopectin and glycogen because it has a highly branched structure. 

Step 2: Evaluating the Assertion and Reason - Assertion (A) is correct: Rhodophyceae stores food as floridean starch. - Reason (R) is also correct: Floridean starch has a structure resembling amylopectin and glycogen. - (R) correctly explains (A), as it justifies why floridean starch is used as a storage material. Thus, both (A) and (R) are correct, and (R) is the correct explanation of (A).