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Energy Flow in an Ecosystem — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceEnergy Flow in an Ecosystem3 Marks
Question
Energy flow through an ecosystem is ‘one way’.
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Answer

  • The Sun is the most important source of energy in any ecosystem.
  • Green plants of the ecosystem store some amount of solar energy in the form of food.
  • Before reaching the decomposers, this energy is passed on from one trophic level to the next.
  • Decomposers dissipate some amount of energy in the form of heat.
  • However, no part of the energy ever returns to the Sun. Hence, energy flow through an ecosystem is ‘one way’.

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