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A plant requires potassium mainly for?...

A plant requires potassium mainly for?

A

holding its cells together

B

opening and closing of stomata

C

synthesizing chlorophyll

D

DNA replication

Text Solution

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The correct Answer is:
B
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ICSE-MINERAL NUTRITION -TEST YOUR PROGRESS (OBJECTIVE TYPE QUESTIONS)
  1. Which of the following is free-living bacteria responsible for nitroge...

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  2. The yellowing of leaves, called chlorosis, is usually caused by the de...

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  3. A plant requires potassium mainly for?

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  4. Heart rot of beet root is caused by the deficiency of :

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  5. Which of the following statements is incorrect?

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  6. Which of the following minerals is required for all phosphorylation re...

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  7. Phosphorus deficiency in plants causes:

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  8. Which of the following is not a macronutrient?

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  9. On the basis of symptoms of chlorosis in leaves, a student inferred th...

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  10. A microelement is one which is

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  11. At the time of heavy rain, minerals in upper layers of the soil move d...

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  12. Absence of Mglons from plant tissues results in

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  13. Hydroponics is a technique of growing:

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  14. In plants, mineral ions

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  15. Micronutrients are needed in very small amount because

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  16. Which of the following is a correct statement about nitrogen fixation?

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  17. Which of the following nutrients is incorrectly paired with its functi...

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  18. A mineral deficiency is likely to affect older leaves more than younge...

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  19. Which of these is not a nutrient for plants?

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  20. The largest reservoir of nitrogen on earth is :

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