CUET · BIOLOGY · PYQ PAPER 2023

Darwin's finches are the example of :

A Seasonal isolation
B Saltation
C Seasonal migration
D Adaptive radiation

Verified Solution

Answer & Solution

Correct Answer

(D) Adaptive radiation

Step-by-step Solution

Detailed explanation

Adaptive radiation

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 ( Populationinteractions)	List-II (Affected species)
(A) Competition	(I) One species is benefitted, while the other is neither benefited nor harmed
(B) Parasitism	(II) Both species are in loss
(C) Amensalism	(III) Only one species is benefitted
(D) Commensalism	(IV) One species is harmed, the other is unaffected

Choose the correct answer from the options given below:

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Match List-l with List-ll

List-l	List-ll
(A) \(f(x)=x \cdot \sin x\)	(I) is not continuous at \(x=-3\)
(B) \(f(x)=\frac{\|x\|}{x}, x \neq 0\) and \(f(x)=1\) at \(x=0\)	(II) is continuous everywhere
(C) \(f(x)=x-[x],[x]\) denotes greatest integer function	(III) is not differentiable at \(x=1\)
(D) \(f(x)=e^{\|x-1\|}\)	(IV) is not continuous at \(x=0\)

Choose the correct answer from the options given below :

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List - I (Disease)	List - II (Pathogen)
(A) Pneumonia	(I) Salmonella typhi
(B) Typhoid	(II) Plasmodium falciparum
(C) Malaria	(III) Wuchereria bancrofti
(D) Filariasis	(IV) Haemophilus influenzae