Question 1 — Choose the most appropriate option - Questions at the end of the chapter - Chapter 13 - Earth as a System: Energy, Matter, and Life (Exploration)

Last updated at July 3, 2026 by

Question 1
Choose the most appropriate option to describe the role of biogeochemical cycles in an ecosystem. (i) To provide food directly to all organisms. (ii) To recycle essential nutrients between biotic and abiotic components. (iii) To create new elements for use by living things. (iv) To remove pollutants and toxins from the organism.
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Answer: (ii) To recycle essential nutrients between biotic and abiotic components

  • Biogeochemical cycles move nutrients like carbon, nitrogen and oxygen between living organisms and the non-living environment, keeping them available.
  • They do not directly feed all organisms, create new elements, or simply remove toxins.
Role of the Cycles Nutrients move between living and non-living Carbon, nitrogen and oxygen are recycled So the answer is recycling - (ii)
Back to: 13.3 Biogeochemical Cycles
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