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NEET 2023, Biology Q17: Ecosystem

NEET2023Biology
Q.

Identify the correct statements:

A. Detrivores perform fragmentation.

B. The humus is further degraded by some microbes during mineralization.

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:

  1. A

    A, B, C only

  2. B

    B, C, D only

  3. C

    C, D, E only

  4. D

    D, E, A only

Solution

Detrivores like earthworms fragment dead organic matter (A correct). Microbes mineralise humus to release inorganic nutrients (B correct). Soluble salts move down with percolating water and may be lost or precipitated — this is leaching (C correct). The detritus food chain starts with dead organic matter, not living organisms (D incorrect). Earthworm fragmentation is a mechanical breakdown, not the biochemical process called catabolism (E incorrect).

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