Biosphere


 
 
Concept Explanation
 

Biosphere

Biosphere:

The parts of the lithosphere, the hydrosphere and the atmosphere in which life exists together form the biosphere.

  • It has both living and nonliving worlds. The living world is called the biotic component, whereas the nonliving one is called the abiotic component. Soil, water and air constitute the abiotic component whereas all living beings constitute the biotic component.
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    Sample Questions
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    Question : 1

    Earth's largest ice volume is present in ____________________

    Right Option : C
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    Question : 2

    Which of the following are correct :

    (a) The parts of the lithosphere, the hydrosphere and the atmosphere in which life exists together form the biosphere.

    (b) Biosphere is characterised by the continuous cycling of matter and an accompanying flow of solar energy in which certain large molecules and cells are self-reproducing.

    (c) Biosphere has both living and nonliving worlds.

    Right Option : D
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    Question : 3

    Ecosystem is a function unit of biosphere, composed of biotic and abiotic factors that interact among themselves. There is a continuous flow of energy and matter through the system. Which one of the following is the definition of ecosystem ?

     

    Right Option : C
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