The potassium present in plant help the plant to___________________?
Correct answer: D. all the above statements are correct
- A. form starch sugar and fibrous material
- B. ripen the seeds and fruits
- C. increase the resistance against disease
- D. all the above statements are correct
Explanation
Potassium activates enzymes and improves several plant processes, including starch and sugar formation, seed and fruit development, and resistance to disease. Since all three listed effects are associated with adequate potassium nutrition, d is correct. Students may select c because disease resistance is a particularly well-known potassium function, but it is not the only one.
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About Reactions of Group I Elements
Group I elements have one valence electron, so their reactivity increases down the group as ionisation energy decreases. Their reactions with water, oxygen, hydrogen and halogens produce hydroxides, oxides, hydrides and halides, while the behaviour of lithium differs from the heavier metals because of its small ionic size.
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