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GK QUESTION#3614

What happens due to unequal growth of a plant tendril when it comes in contact with a support?

  1. AIt grows vertically upward
  2. BIt coils around the support and holds itCorrect answer
  3. CIt detaches from the plant
  4. DIt dries and stops growing
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Answer

B. It coils around the support and holds it

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Explanation

A tendril bends and coils around a support after contact. Unequal growth on its sides produces this directional response, called thigmotropism, helping the climbing plant remain attached.

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