Multiple choice general knowledge

Due to which chemical plants bend towards sunlight?

  1. carbon

  2. sulphur

  3. auxin

  4. oxygen
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Auxin is a plant hormone responsible for phototropism - the movement of plants toward light. When light hits one side of a plant, auxin redistributes to the shaded side, causing cells on that side to elongate more and bend the stem toward the light source. Charles Darwin first observed this phenomenon.

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