allery**Hydroponics** is:
AGrowing plants in liquid nutrient solution without soil
BTissue culture
CUse of pesticides
DSelective breeding
Answer & Solution
Correct answer: A. Growing plants in liquid nutrient solution without soil
**Hydroponics:** roots in aerated nutrient solution.
Used to study mineral requirements (Sachs, Knop).
Modern commercial use in greenhouses.
Allows precise nutrient control, faster growth, higher yields per unit area but requires careful pH/EC management.
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