NEET · Biology · STD 11 - 3. Plant kingdom

An alga which can be employed as food for human being is

A Ulothrix
B Chlorella
C Spirogyra
D Polysiphonia.

Verified Solution

Answer & Solution

Correct Answer

(B) Chlorella

Step-by-step Solution

Detailed explanation

(b) : Chlorella is a single celled chlorophycean alga with rich protein content. It is considered as a source of \(SCP\) (single cell protein) and also as food source during long space travels.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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List I	List II
A. Molluscs	I. Pulmonary respiration only
B. Reptiles	II. Branchial respiration
C. Adult amphibians	III. Cellular respiration
D. Amoeba	IV. Pulmonary and Cutaneous respiration