Home Biology Ecosystem Decomposition Humus is a ........(1)....... coloured amorp…
Biology Ecosystem Decomposition Single Correct MCQ
Published on: August 21, 2026

Humus is a ........(1)....... coloured amorphous substance which is highly….(2)…..to microbial action and undergo decomposition at a very….(3)....... rate-

A
(1) - light, (2) - slow, (3) – slow
B
(1) - light, (2) - susceptible, (3) – slow
C
(1) - resistant, (2) - fast, (3) – slow
D
(1) - dark, (2) - resistant, (3) - slow

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The correct answer is:
D

Humus is a dark coloured amorphous substance, highly resistant to microbial action, and decomposes at a very slow rate.

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