AIPMT 2013 Biology Solved Paper

Question : 47 of 90

Marks: +1, -0

Which one of the following processes during decomposition is correctly described ?

Leaching - Water soluble inorganic nutrients rise to the top layers of soil
Fragmentation - Carried out by organisms such as earthworm
Humification - Leads to the accumulation of a dark coloured substance humus which undergoes microbial action at a very fast rate
Catabolism - Last step in the decomposition under fully anaerobic condition

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