Match the column

I II
a Potassium 1. Constituent of ferrefoxin
b Sulphur 2. Involved in stomatal movement
c Molybdenum 3. Needed in synthesis of auxin
d Zinc 4. Component of nitrogenase

a - 2, b - 1, c - 4, d - 3

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a - 1, b - 2, c - 3, d - 4

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a - 4, b - 3, c - 2, d - 1

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a- 1, b - 3, c - 4, d - 2

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a - 3, b - 4, c - 1, d - 2

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Solution

The correct option is A a - 2, b - 1, c - 4, d - 3
Potassium - It helps in opening and closing of stomata.
Sulphur - It is used in the synthesis of some vitamins, coenzyme-A and ferredoxin.
Molybdenum - It is composed of many enzymes like nitrogenase and nitrate reductase used in nitrogen metabolism.
Zinc - It activates many enzymes and also required in the synthesis of auxin.
So the correct answer 'a-2, b-1, c-4, d-3'.

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	I		II
a	Potassium	1.	Constituent of ferrefoxin
b	Sulphur	2.	Involved in stomatal movement
c	Molybdenum	3.	Needed in synthesis of auxin
d	Zinc	4.	Component of nitrogenase

Match the columnIIIaPotassium1.Constituent of ferrefoxinbSulphur2.Involved in stomatal movementcMolybdenum3.Needed in synthesis of auxindZinc4.Component of nitrogenase

Match the column

I II
a Potassium 1. Constituent of ferrefoxin
b Sulphur 2. Involved in stomatal movement
c Molybdenum 3. Needed in synthesis of auxin
d Zinc 4. Component of nitrogenase