Quiz  /  Ecology Class 11 MCQ Questions With Answers

  • 1. 
    Series of steps in which organisms transfer energy by eating and being eaten

  • foodweb
  • consumer
  • food chain
  • omnivore

  • 2. 
    In the food web shown, the snail would be considered...

  • primary consumer
  • secondary consumer
  • tertiary consumer
  • producer

  • 3. 
    Members of a species in a defined area

  • Ecosystem
  • community
  • biodiversity
  • population

  • 4. 
    A carbon "sink" is best described as:

  • a reservoir that readily releases carbon to another reservoir
  • a carbon reservoir that stores more carbon that it is releasing
  • something that causes carbon to leak out to the atmosphere
  • a carbon reservoir that is releasing more carbon than it is taking in

  • 5. 
    Which of the following leads to a decrease in biodiversity?

  • protection of ecosystems
  • pollution control
  • selective cutting
  • introduction of exotic or invasive species

  • 6. 
    Which biome, because of its climate and amount of rainfall, has the largest number of species of plants and animals?

  • Tundra
  • Rainforest
  • Desert
  • Pineforest

  • 7. 
    Nitrogen makes up _____ percent of the atmosphere.

  • 66%
  • 78%
  • 90%

  • 8. 
    What does fungi do to dead plants and animals?

  • Leave them there
  • Decompose them
  • Wait for other animals to eat them
  • Move away

  • 9. 
    Consumer that eats plants

  • heterotroph
  • herbivore
  • producer
  • community

  • 10. 
    What may happen if the snowshoe hare was removed from the food web pictured?

  • The insects in the habitat would increase.
  • The shrew population would decrease due to being only hawk food source.
  • The willow tree population would decrease.
  • Foxes would dies due to no food source.

  • 11. 
    Nitrogen fixation processes nitrogen from which of the following sources?

  • lightning
  • fertilizers
  • dead plants
  • atmosphere

  • 12. 
    All the organisms in a particular location, including their nonliving environment

  • ecosystem
  • carnivore
  • niche
  • population

  • 13. 
    In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?

  • 10%
  • 20%
  • 80%
  • 90%

  • 14. 
    What is it called when water is changed from a liquid to a gas?

  • EVAPORATION
  • PRECIPITATION
  • TRANSPIRATION

  • 15. 
    Organisms that relies on other organisms for food; consumer

  • herbivore
  • decomposer
  • heterotroph
  • species
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