CUET · BIOLOGY · PYQ PAPER 2025

Identify the correct statement for Zygote Intra-Fallopian Transfer (ZIFT).

A The in-vitro technique involving the transfer of an early embryo into the
fallopian tube of the same female from whom the egg was taken.
B The in-vitro technique involving the transfer of an ovum collected from a
donor into the fallopian tube of another female.
C The in-vivo technique involving the transfer of an early embryo into the
fallopian tube of the same female from whom the egg was taken.
D The in-vivo technique involving the transfer of an ovum collected from a
donor into the fallopian tube of another female.

Verified Solution

Answer & Solution

Correct Answer

(A) The in-vitro technique involving the transfer of an early embryo into the
fallopian tube of the same female from whom the egg was taken.

Step-by-step Solution

Detailed explanation

The in-vitro technique involving the transfer of an early embryo into the fallopian tube of the same female from whom the egg was taken.

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
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