NEET · Biology · STD 12 - 1. sexual reproduction in flowering plants

Double fertilization is

A Fusion of one male gamete with two polar nuclei
B Fusion of two male gametes of a pollen tube with two different eggs
C Fusion of two male gametes with one egg
D Syngamy and triple fusion

Verified Solution

Answer & Solution

Correct Answer

(D) Syngamy and triple fusion

Step-by-step Solution

Detailed explanation

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 related to embryonic development at various months of pregnancy :

List I	List II
A. The foetus movement starts and hair appears on the head	I.24weeks of pregnancy
B. The foetus develops limbs and digits	II.20weeks of pregnancy
C. The foetus develops external genital organs	III.8weeks of pregnancy
D. The foetus body is covered with fine hair; eyelids separate and eyelashes are formed	IV.12weeks of pregnancy

Choose the correct answer from the options given below :

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