KCET · BIOLOGY · STD 12 - 7. Human Health and Disease

Damage to thymus in a child may lead to

A a reduction in the amount of plasma proteins
B loss of antibody mediated immunity
C loss of cell mediated immunity
D a reduction in the haemoglobin content in blood.

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Answer & Solution

Correct Answer

(C) loss of cell mediated immunity

Step-by-step Solution

Detailed explanation

(C) loss of cell mediated immunity,
Damage to the thymus in a child may lead to loss of cell-mediated immunity. The thymus is crucial for the development and maturation of T-cells, which are essential for cell-mediated immune responses.

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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