NCERT/Class 12/Biology/Ecosystem

Ecosystem

Class 12 · Biology

32 questions21 easy8 medium3 hard

Sample Questions

Q1.Desert biome receives:

  • AHigh rainfall
  • BLess than 25 cm annual rainfall
  • CModerate rainfall
  • DEqual rainfall throughout year

Q2.Biomes are characterized by:

  • AClimate only
  • BVegetation patterns
  • CBoth climate and vegetation
  • DAnimals only

Q3.An ecosystem consists of:

  • AOnly plants
  • BBiotic and abiotic components
  • COnly animals
  • DOnly microorganisms

Q4.Decomposers break down dead organic matter by:

  • APhotosynthesis
  • BDigestion and absorption
  • CRespiration
  • DPhotolysis

Q5.Ecological pyramids show:

  • ALinear relationships
  • BEnergy or biomass distribution among trophic levels
  • COnly numbers
  • DOnly energy

Q6.This is a sample question to preview what you'll get in the full practice test...

  • A. Option one
  • B. Option two
  • C. Option three
  • D. Option four
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Concepts Covered

BiomesEcosystem componentsEnergy flowFood chainsFood websNutrient cyclesSuccessionTrophic levels

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