Which of the following are correct regarding the factors affecting absorption of water by plants?
(i) In plants rate of water absorption is minimum at soil temperature 20\({ }^{\circ} \mathrm{C}\) to 30 \({ }^{\circ} \mathrm{C}\)
(ii) Presence of capillary water is essential in soil.
(iii) Poorly aerated soil shows poor absorption rate.
(iv) Low transpiration rate accelerates the rate of absorption of water in irrigated soil.
(v) High concentration of solutes in soil water reduces the rate of absorption of water.

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.