MHT CET · BIOLOGY · STD 12 - 7. Plant Growth and Mineral Nutrition

Identify the INCORRECT statement regarding the role of minerals in plants.

A Along with sodium and potassium, chorine helps to maintain amino-cation balance in cells.
B Chlorine is essential for the release of oxygen in photosynthesis.
C Sodium helps in the opening and closing of stomata.
D Zinc forms a part of enzyme carbonic anhydrase.

Verified Solution

Answer & Solution

Correct Answer

(C) Sodium helps in the opening and closing of stomata.

Step-by-step Solution

Detailed explanation

\(\mathrm{K}^{+}\) is involved in opening and closing of stomata.

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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