MCQ
Identify the incorrect statements:
A. Detrivores perform fragmentation on live material in ecosystem.
B. The humus is dark nutrient rich substance degraded by microorganism.
C. Water soluble inorganic nutrients go down into the soil and get precipitated by a process called leaching.
D. The detritus food chain begins with living organisms.
E. Earthworms break down detritus into smaller particles by a process called catabolism.
Choose the correct answer from the options given below:
  • D, E, A only
  • B
    A, B, C only
  • C
    B, C, D onlv
  • D
    C, D, E only

Answer

Correct option: A.
D, E, A only
(A)
Detritus food chain (DFC) begins with detritus or dead organic matter. Detrivores (eg. Earthworm, millipeds, slugs) perform fragmentation process on dead decaying material in any ecosystem. Humus a dark nutrient rich substance is degraded by microorganisms releasing inorganic nutrients into the soil. This process is known as mineralization. By the process leaching, water soluble inorganic nutrients go down into the soil horizon and get precipitated as unavailable salts.

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