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SSC CHSL 2020 PYQ — Question 49

SSC CHSL - 16th October 2020 - Shift 2 • General Awareness • Q49

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The solar tracking (moving in the sun's direction) of the sunflower is called ______.

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Correct answer: D

Explanation

The correct answer is option 4 i.e Heliotropism.

  • Heliotropism, a form of tropism, is the diurnal or seasonal motion of plant parts (flowers or leaves) in response to the direction of the sun.
  • Phototropism is the growth of an organism in response to a light stimulus. 
  • Hydrotropism is a plant's growth response in which the direction of growth is determined by a stimulus or gradient in water concentration.
  • Thigmotropism is a directional growth movement that occurs as a mechanosensory response to a touch stimulus