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Plants dissipate excess sunlight as heat

  • IASbaba
  • March 11, 2020
  • 0
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Plants dissipate excess sunlight as heat

Part of: GS Prelims and GS-III- Science & Technology

In News:

  • Photosynthesis is a life-sustaining process by which plants store solar energy as sugar molecules. 
  • However, if sunlight (solar energy) is in excess, it can lead to leaves being dehydrated and damaged
  • The excess solar energy is transferred from the pigment chlorophyll, which gives leaves their green colour, to other pigments called carotenoids. 
  • The carotenoids then release the energy as heat
  • The heat dissipation phenomenon occurs on a very fast time scale, in femtoseconds or quadrillionths of a second.
  • The excess energy, if not released, leads to the creation of free radicals that can damage proteins and other important cellular molecules.

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