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 fecal matter
Choose the correct answer from the options given below:
| 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 fecal matter |
Answer: (B) A-III, B-IV, C-II, D-I. Answer: (B) Decomposition = breaking down of complex organic matter into inorganic substances (III); Detritus = dead remains of plants and animals including fecal matter (IV); Mineralisation = release of inorganic nutrients by microbial activity in soil (II); Humification = accumulation of dark coloured amorphous colloidal substance, humus (I).
- A.A-IV, B-III, C-I, D-II
- B.A-III, B-IV, C-II, D-I✓
- C.A-I, B-II, C-III, D-IV
- D.A-III, B-II, C-I, D-IV
Correct Answer
(B) A-III, B-IV, C-II, D-I
Solution & Explanation
Answer: (B) Decomposition = breaking down of complex organic matter into inorganic substances (III); Detritus = dead remains of plants and animals including fecal matter (IV); Mineralisation = release of inorganic nutrients by microbial activity in soil (II); Humification = accumulation of dark coloured amorphous colloidal substance, humus (I). This gives A-III, B-IV, C-II, D-I = option (2), i.e. (b). NCERT Reference: Ch 12, p.207 — “down complex organic matter into inorganic substances”