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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2025 · Paper I, General Studies · Q91 of 120

Geo-Scientist Prelims 2025 General Studies Q91: Which one of the following statements about ecosystems is *not*…

QuestionEcology / ecosystem

Which one of the following statements about ecosystems is *not* correct?

  1. (a) Ecosystems are not self-sustaining.
  2. (b) Nutrient cycling supplies inorganic nutrients.
  3. (c) Energy flows in ecosystems mostly rely on sunlight.
  4. (d) Ecosystems support communities of organisms.

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