BiogeoChemical Cycles


 
 
Concept Explanation
 

Biogeochemical Cycles

Biogeochemical Cycles

‘Bio’ refers to living organisms and ‘geo’ to the air, water and soil of the earth. Chemical elements tend to circulate in a characteristic path—from the environment to organisms and back to the environment. These more or less circular paths are known as biogeochemical cycles or nutrient cycles. Circulation of various nutrients between the living and nonliving components of ecosystems are called biogeochemical cycles. During these cycles, inorganic nutrients get converted into food.

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Sample Questions
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Question : 1

Which of the following are correct :

(a) In biogeochemical cycles, ‘Bio’ refers to living organisms.

(b) In biogeochemical cycles, ‘geo’ refers to the air, water and soil of the earth.

(c) During  biogeochemical cycles, inorganic nutrients get converted into food.

Right Option : D
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Question : 2

Which of the following are correct :

(a) Circulation of various nutrients between the living and nonliving components of ecosystems are called biogeochemical cycles.

(b) During biogeochemical cycles, inorganic nutrients get converted into food.

(c) The four important biogeochemical cycles in nature are the carbon cycle, nitrogen cycle, oxygen cycle and water cycle.

Right Option : D
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Question : 3

The important biogeochemical cycles in nature are ___________________.

Right Option : D
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