Question

Which of the following statement about decomposition is incorrect?

• A. Decomposers break down complex organic matter into inorganic substances
• B. Water insoluble organic nutrients go down into the soil horizon during the process of leaching
• C. In fragmentation, detrivores break down detritus into smaller particles
• D. Saprophytic bacteria and fungi secrete digestive enzymes over the fragmented detritus

Answer 1

The correct option is B Water insoluble organic nutrients go down into the soil horizon during the process of leaching

Decomposition is the process of breakdown of organic matter into simple inorganic substances. The important steps involved in decomposition are:
1) Fragmentation: Organisms like earthwomrs break down waste material called detritus into smaller particles.
2) Leaching: Water soluble inorganic nutrients go down into the soil horizon during the process of leaching.
3) Catabolism: Enzymatic action by bacteria and fungi degrades detritus into simple inorganic material.
4) Humification: It results in the accumulation of humus, a dark coloured amorphous substance.
5) Mineralisation: Humus is further acted upon microbes to release inorganic substances.