Class 12 · Ecosystem

Humification and Mineralisation — NEET Biology

✅ Asked in NEET 2026
✅ NEET 2026 PYQ

Match List I with List II — A. Decomposition, B. Detritus, C. Mineralisation, D. Humification.

QuestionNEET 2026 (cancelled)

Match List I with List II — A. Decomposition, B. Detritus, C. Mineralisation, D. Humification.

Answer & NCERT explanation

Correct answer: B A-III, B-IV, C-II, D-I

Decomposition breaks complex organic matter into inorganic substances; detritus is dead remains including faecal matter; mineralisation releases inorganic nutrients via soil microbes; humification accumulates dark, amorphous, colloidal humus.

Read more NCERT concept on the PYQ

📖 NCERT Source

It is important to note that all the above steps in decomposition operate simultaneously on the detritus. Humification and mineralisation occur during decomposition in the soil. Humification leads

NCERT Biology · Class 12 · Chapter 12 · Paragraph 14
How NTA Uses This Concept

Humification and mineralisation are simultaneous processes during decomposition. Humification converts detritus into dark, colloidal humus that improves soil structure and water retention, while mineralisation releases inorganic nutrients (N, P, K) available for plant uptake. Students often confuse these processes—thinking humification releases nutrients (wrong) or that mineralisation doesn't require microorganisms (also wrong). Remember: humification builds complex organic matter; mineralisation breaks it down into simple inorganic forms. NTA tests this because it's fundamental to nutrient cycling and explains how dead organic matter becomes soil fertility. This ecosystem concept appears frequently in ecological productivity questions.

❓ Frequently Asked Questions
What does NCERT say about It important to note?
It is important to note that all the above steps in decomposition operate simultaneously on the detritus. Humification and mineralisation occur during decomposition in the soil.
Has this concept appeared in NEET?
Yes — appeared in NEET 2026 (cancelled). NEET 2026 paper question; matched on: humification
Which chapter is this from?
Ecosystem, Class 12 NCERT Biology.

Through deep analysis of NEET and NTA, 88 of 90 questions from the NEET 2026 paper were matched straight from the MedicNEET Biology question bank.

88/90
of the NEET 2026 Biology paper matched from the MedicNEET question bank

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