Multiple choice

'Hydroponics' means

  1. cultivation of plants without the use of soil

  2. detection of sound in water

  3. animals living in water

  4. the Japanese art of flower arrangement
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A Correct answer
Explanation

Hydroponics is the cultivation of plants without soil, using nutrient-rich water solutions instead. Plant roots grow directly in water or inert media. It allows year-round cultivation and higher yields. It has nothing to do with sound detection, aquatic animals, or Japanese flower arrangement.

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