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Ecosystem question

2013 · Q45
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Ecosystem question

2013 · Q45

NEETBiologyEcosystemMCQ+4 / −1
Which one of the following processes during decomposition is correctly described ?
  1. A
    Catabolism – Last step in the decomposition under fully anaerobic condition
  2. B
    Leaching – Water soluble inorganic nutrients rise to the top layers of soil
  3. C
    Fragmentation –Carried out by organisms such as earthworm
  4. D
    Humification – Leads to the accumulation of a dark coloured substance humus which undergoes microbial action at a very fast rate
View written solutionFree

Correct answer: C

Humification, catabolism, leaching and fragmentation are the steps of decomposition which operate simultaneously on the detritus. Fragmentation is breaking down detritus into smaller particles by detritivores like earthworm. By the process of leaching, water soluble inorganic nutrients go down into soil horizon and get precipitated as unavailable salts. Humification occurs at a very slow rate.

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