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Match List-I with List-II regarding the steps of decomposition. List-I List-II (A) Fragmentation (I) Bacterial and fungal enzymes (B) Leaching (II) Accumulation of dark amorphous substance (C) Catabolism (III) Precipitation of unavailable salts (D) Humification (IV) Earthworms Choose the correct answer from the options given below:

Options

  1. A(A)-(I), (B)-(III), (C)-(IV), (D)-(II)
  2. B(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
  3. C(A)-(IV), (B)-(II), (C)-(I), (D)-(III)
  4. D(A)-(I), (B)-(II), (C)-(IV), (D)-(III)

Correct answer

B. (A)-(IV), (B)-(III), (C)-(I), (D)-(II)

Step-by-step solution

The correct matching of the steps of decomposition with their agents or descriptions is as follows: (A) Fragmentation: Detritivores (e.g., earthworms) break down detritus into smaller particles. Matches with (IV). (B) Leaching: Water-soluble inorganic nutrients go down into the soil horizon and get precipitated as unavailable salts. Matches with (III). (C) Catabolism: Bacterial and fungal enzymes degrade detritus into simpler inorganic substances. Matches with (I). (D) Humification: Leads to the accumulation of a d

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