NEET · Biology · STD 11 - 13. Plant growth and development

Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin

A promotes abscission of mature leaves only.
B does not affect mature monocotyledonous plants.
C can help in cell division in grasses, to produce growth.
D promotes apical dominance.

Verified Solution

Answer & Solution

Correct Answer

(B) does not affect mature monocotyledonous plants.

Step-by-step Solution

Detailed explanation

Sol. Auxin does not affect mature monocot plants. In monocots, especially grasses show limited translocation and cause rapid degradation of external auxin.

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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