Hydroponics means
- Cultivation of plants without using soil
- Detection of sound in air
- Animals living in water
- None of these
Explanation
Explanation:
Correct answer A
Hydroponics is a type of horticulture, a subset of hydroponics, that uses nutrient mineral solutions in aqueous solvents to grow plants (usually plants) without soil. Terrestrial or aquatic plants grow with roots exposed to nutritious liquids or are further physically supported by inert media such as pearlite, gravel and other substrates.
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