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Which process of decomposition is correctly described?

  1. A
    Fragmentation — Carried out by organisms such as earthworms.
  2. B
    Humification — Leads to accumulation of humus which undergoes fast microbial action.
  3. C
    Catabolism — Last step in decomposition under anaerobic conditions.
  4. D
    Leaching — Water soluble inorganic nutrients rise to the top layers of soil.

Solution & Step-by-step Explanation

Fragmentation is the first step of decomposition where detritivores like earthworms break down detritus into smaller particles. Humification leads to a substance that is very resistant to microbial action (slow decomposition), and leaching causes nutrients to move downward into the soil.

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Which process of decomposition is correctly described?
A
Fragmentation — Carried out by organisms such as earthworms.
B
Humification — Leads to accumulation of humus which undergoes fast microbial action.
C
Catabolism — Last step in decomposition under anaerobic conditions.
D
Leaching — Water soluble inorganic nutrients rise to the top layers of soil.

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