Home PYQs UPPSC UPPSC MCQs Prelims 2012 (GS Paper I)

Question

The cycling of elements in an ecosystem is called

  1. Chemical cycles
  2. Biogeochemical cycles
  3. Geological cycles
  4. Geochemical cycles

Answer:

Option B: Biogeochemical cycles

Detailed Solution:

The correct answer is “Biogeochemical cycles”.

The cycling of elements in an ecosystem is called biogeochemical cycling. Biogeochemical cycles are closed loops that move elements and compounds between living organisms, the atmosphere, hydrosphere, geosphere, and other Earth reservoirs.

These cycles are powered by energy and involve biological, geological, and chemical processes.