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 Multiple Choice QuestionsMultiple Choice Questions

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21.

If 20 J of energy is trapped at the producer level, then how much energy will be available to peacock as food in the following chain?

Plant--> Mice --> Snake --> Peacock

  • 0.02 J

  • 0.002 J 

  • 0.2 J 

  • 0.2 J 

690 Views

22.

Identify the likely organisms (a), (b) (c) and (d) in the food web shown below

  • (I) (II) (III) (IV)
    deer rabbit frog rat
  • (I) (II) (III) (IV)
    dog squirrel bat deer
  • (I) (II) (III) (IV)
    rat dog tortoise crow
  • (I) (II) (III) (IV)
    rat dog tortoise crow
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23.

Vertical distribution of different species occupying different levels in a biotic community is known as

  • divergence

  • stratification

  • zonation

  • zonation

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24.

Secondary succession takes place on/in

  • bara rock

  • degraded forest

  • newly created pond

  • newly created pond

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25.

The mass of living material at a tropic level at a particular time is called

  • gross primary productivity 

  • standing state

  • net primary productivity

  • net primary productivity

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26.

In an ecosystem the rate of production of organic matter during photosynthesis is termed as

  • net primary productivity

  • gross primary productivity 

  • secondary productivity

  • secondary productivity

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27.

Which one of the following statements is correct for secondary succession?

  • It occurs on a deforested site

  • It follows primary succession

  • It is similar to primary succession except that it has a relatively fast pace

  • It is similar to primary succession except that it has a relatively fast pace

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28.

Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?

  • It shows energy content of different trophic level organisms

  • It is inverted in shape

  • It is upright in shape

  • It is upright in shape

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29.

Of the total incident solar radiation, the proportion of PAR is 

  • about 60%

  • less than 50%

  • more than 80%

  • more than 80%

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30.

Which one of the following animals may occupy more than one trophic levels in the same ecosystem at the same time?

  • Sparrow

  • Lion

  • Goat

  • Goat

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