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In hydroponics, plants are grown 

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a
in a solution containing soil, minerals and water in a defined proportion
b
in a solution containing plant ash and water
c
by providing nutrients laden moist air to the roots of the plant.
d
in a solution containing essential nutrients in a definite proportions.

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detailed solution

Correct option is D

Julius von Sachs demonstrated for the first time that plants could be grown to maturity in a defined nutrient solution in complete absence of soil. This technique of growing plants in a nutrient solution is known as hydroponics.

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Similar Questions

Hydroponics require

a. purified water
b. impure water
c. mineral nutrient salt


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