A) water conservation
B) plant development in water without soil
C) plant development without soil
D) plant development in saline soil
Correct Answer: B
Solution :
In 1860, Julius 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. These methods required purified water and mineral nutrient salts.
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