Question 3 Page 122 - Chapter 7 Class 10 - Control and Coordination

Last updated at July 27, 2026 by

Give an example of a plant hormone that promotes growth

 

Answer

Auxin is a plant hormone that promotes growth .

AUXIN AND PHOTOTROPISM - Teachoo.jpg

Let us consider the example of a sunflower growing towards the sunlight.

  • Once the plant detects sunlight , the hormone auxin is secreted at the shoot tips .
  • The secreted auxins diffuse towards the shady side of the plant
  • This makes the cells on the shady side grow longer
  • Thus, the plant appears to bend towards light . 
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AUXIN AND PHOTOTROPISM

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