People and Environment Interaction - Quiz

A keystone species is characterized by its

  • ADisproportionate large impact on ecosystem
  • BVery less impact on ecosystem
  • CNo impact at all
  • DNone of the above

If we combine all the ecosystems present on earth, then it is called

  • ABiome
  • BBiosphere
  • CHabitat
  • DEcology

Who first used and defined Ecology in 1866?

  • AH. Reiter
  • BHaeckel
  • CCharles Elton
  • DOdum

The transitional area between two ecosystems is termed as

  • AEcoline
  • BEcotourism
  • CEcotone
  • DNone of the above

Energy pyramid is

  • AAlways inverted
  • BAlways horizontal
  • CSometimes diagonal
  • DNone of the above

Cloudy nights are warmer compared to clear nights (without clouds) during winters. This is because

  • AClouds radiate heat towards the earth.
  • BClouds prevent cold waves from the sky descending on the earth.
  • CClouds prevent escaping of heat radiation from the earth.
  • DClouds being at great heights from earth absorb heat from the sun and send them towards the earth.

If population growth follows a logistic curve, then the maximum sustainable yield

  • AIs equal to half the carrying capacity.
  • BIs equal to the carrying capacity.
  • CDepends on growth rates.
  • DDepends on the initial population.

In which of the following layers of the atmosphere, ozone (O3) gas is present?

  • AStratosphere
  • BMesosphere
  • CTroposphere
  • DNone of the above

In an ecotone, the species which become abundant are called

  • AKeystone species
  • BEndemic species
  • CEdge species
  • DFoster species

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