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NTA Abhyas NEET2020BotanyPlant - Growth and DevelopmentPractice

A plant placed near a window bends outward because

Options

  1. AIts tip is able to get more oxygen
  2. BIts tip is able to obtain more light
  3. CIts tip is able to receive necessary warmth
  4. DIts tip has auxin which is responsible for phototropic movement.

Correct answer

D. Its tip has auxin which is responsible for phototropic movement.

Step-by-step solution

Plant bends outwards when it placed near the window because of auxin responsible for the phototropism movement. The auxin contents on the shadow side is higher than that on the lighter side and as a result, the shaded side elongate more than the cells on the illuminated side and the tip bends outwards

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