A) the conservation of water resources
B) plant development in water and soil
C) plant development in xerophytic condition
D) plant development in water without soil
Correct Answer: D
Solution :
In 180, Julium Von Sachs, a German botanist, 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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