A) growing plants without soil
B) growing plants in water
C) growing plants without matter
D) All of the above
Correct Answer: D
Solution :
Hydroponics or solution culture or soilless culture is cultivation of plant in nutrient solution without soil. In other words the cultivation or growing of plant by placing the roots in nutrient solution is termed as hydroponics. Now-a-days chealting agent (Na-ETDA- disodium salt of ethylene diamintetra acetic acid and DTPA- diethylene triamino penta acetic acid, keep the metal of nutrient solution in soluble state.
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