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Micro-Nutrients

Which one of ...

Question

Which one of the following is not a micronutrient?

A

Magnesium

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B

Molybdenum

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C

Boron

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D

Zinc

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Solution

The correct option is A
Magnesium

Plants need macronutrients as well as micronutrients for the normal growth and functioning. Nitrogen, potassium, phosphorus, calcium, magnesium and sulphur are the macronutrients while molybdenum, zinc, boron, copper, manganese, iron, chlorine etc are the micronutrients used by the plants.

Among the given choices, magnesium is not a micronutrient.

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Q. Name one function and one deficiency symptom of the following elements: (i) nitrogen; (ii) iron; (iii) calcium; (iv) molybdenum; (v) manganese; (vi) boron; (vii) zinc; (viii) magnesium; (ix) chlorine; (x) sulphur.

Q. Match the following and choose the correct combination from the options given:

\begin{matrix} L i s t - I & L i s t - I I a. Photolysis of water & 1. Zinc b. Diazotrophy & 2. Copper c. Cytochrome c oxidase & 3. Manganese d. Biosynthesis of IAA & 4. Molybdenum 5. B o r o n \end{matrix}

Q. Write one deficiency symptom of the following mineral elements to plants.
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(iv) Zinc
(v) Magnesium

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(c) gallium
(d) germanium

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