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NTA Abhyas NEET2020BotanyEcosystemPractice

________________ leads to accumulation of a dark coloured amorphous substance called ________ that is highly resistant to microbial action and undergoes decomposition at an extremely slow rate.

Options

  1. AHumification, humus
  2. BMineralisation, minerals
  3. CFragmentation, detritus
  4. DLeaching, unavailable salts

Correct answer

A. Humification, humus

Step-by-step solution

Humification leads to accumulation of a dark coloured amorphous substance called humus that is highly resistant to microbial action and undergoes decomposition at an extremely slow rate. Being colloidal in nature it serves as a reservoir of nutrients. The humus is further degraded by some microbes and release of inorganic nutrients occur by the process known as mineralisation

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