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NEET Botany Ecosystem 2026 NEET 2026 (Cancelled)

NEET Botany Question (2026) — Solution

Question

Match List I with List II : List I List II A. Decomposition I. Accumulation of dark coloured amorphous colloidal substance B. Detritus II. Release of inorganic nutrients by the activity of microbes in soil C. Mineralisation III. Breaking down of complex organic matter into inorganic substances D. Humification IV. Dead remains of plants and animals including faecal matter Choose the correct answer from the options given below :

Options

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

Answer

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

Step-by-step solution

Decomposition is the process of breaking down complex organic matter into inorganic substances like carbon dioxide, water, and nutrients. Detritus constitutes the dead remains of plants and animals, including faecal matter, which serves as the raw material for decomposition. Mineralisation is the process by which microbes further degrade humus to release inorganic nutrients into the soil. Humification leads to the accumulation of a dark-coloured, amorphous, colloidal substance called humus, which is highly resistant to microbial action. Thus, the correct matching is A-III, B-IV, C-II, D-I. Answer: A-III, B-IV, C-II, D-I

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