CUET · BIOLOGY · PYQ PAPER 2025

De Vries gave his mutation theory on organic evolution while working on-

A Pisum sativum
B Drosophila melanogaster
C Evening primrose
D Althea rosea

Verified Solution

Answer & Solution

Correct Answer

(C) Evening primrose

Step-by-step Solution

Detailed explanation

Evening primrose

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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Match List-I with List-II

List-I (Physical Quantity)	List-II (SI UNIT)
(A) Mobility of a charge carrier	(I) \( \Omega^{-1} \text{ m}^{-1} \)
(B) Resistivity	(II) \( \text{A m}^{-2} \)
(C) Current Density	(III) \( \text{m}^2 \text{ V}^{-1} \text{ s}^{-1} \)
(D) Conductivity	(IV) \( \Omega \text{ m} \)

Choose the correct answer from the options given below:

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List - I	List - II
(A) Rheumatoid arthritis	(I) Primary lymphoid organ
(B) AIDS	(II) Antibody mediated immune response
(C) Thymus	(III) Immuno deficiency disease
(D) B-Lymphocytes	(IV) Auto-immune disease