CUET · BIOLOGY · PYQ PAPER 2023

Which of the following is NOT an example of alien species invasions?

A Parthenium
B Abingdon tortoise
C Eicchornia crassipes
D Lantana camara

Verified Solution

Answer & Solution

Correct Answer

(B) Abingdon tortoise

Step-by-step Solution

Detailed explanation

Abingdon tortoise

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.

Same subject

Match List - I with List - II.

List - I (Disease)	List - II (Pathogen)
(A) Thalassaemia	(I) Absence of one X chromosome
(B) Phenylketonuria	(II) Inborn error of metabolism
(C) Down’s Syndrome	(III) Autosomal recessive blood disease
(D) Turner’s Syndrome	(IV) Presence of an additional copy of the 21st chromosome

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CUET 2023 Medium

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From CUET

Match List-l with List-ll
Where \(R\) is set of real numbers

List-l	List-ll
(A) \(f: R \rightarrow R\) s.t \(f(x)=x^4\) is	(I) one-one, Into
(B) \(f: R \rightarrow[0, \infty)\) s.t \(f(x)=x^4\) is	(II) many-one, into
(C) \(f:[0, \infty) \rightarrow R\) s.t \(f(x)=x^4\) is	(III) one-one, onto
(D) \(f:[0, \infty) \rightarrow[0, \infty)\) s.t \(f(x)=x^4\) is	(IV) many-one, onto

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