Multiple choice

Growing of roots towards gravity is called ?

  1. Geotropism

  2. Phototropism

  3. Chemotropism

  4. Thigmotropism

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A Correct answer
Explanation

Geotropism (or gravitropism) is the growth of plant parts in response to gravity. Roots exhibit positive geotropism by growing downward toward the pull of gravity, helping them secure water and nutrients.