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Which of the following macronutrients is used in fertilizers?

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in Biology – Class 11 by (272k points)
Which of the following macronutrients is used in fertilizers?

(a) N

(b) O

(c) P

(d) K

This question was posed to me in a national level competition.

I'd like to ask this question from Mineral Requirements of a Plant-2 topic in portion Mineral Nutrition of Biology – Class 11

1 Answer

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Best answer
Correct option is (d) K

Easiest explanation: Nitrogen, Potassium and Phosphorus are important constituent of fertilizers. They are required in abundance by the plants. Oxygen is not used in artificial fertilizers. They in fact interfere with the process of nitrogen fixation carried out by cyanobacteria.

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