Organisms that break down dead organic matter are called ...

Organisms that break down dead organic matter are called ...

• A. Detritivores
• B. Phototrophs
• C. Decomposers
• D. Herbivores

Answer: (C)

Decomposition is carried out by decomposers, organisms that break down dead organic matter by secreting enzymes that digest it outside their bodies and then absorb the nutrients. This extracellular breakdown releases minerals back into the environment, helping recycle nutrients. Bacteria and fungi are classic examples. Detritivores, like earthworms, do ingest and physically break down detritus, but true decomposition refers to the enzymatic breakdown of complex molecules outside the organism. Phototrophs are producers that make organic matter from light or chemical energy, not breakers-down of dead material, and herbivores eat living plant material rather than dead matter.

Decomposition is carried out by decomposers, organisms that break down dead organic matter by secreting enzymes that digest it outside their bodies and then absorb the nutrients. This extracellular breakdown releases minerals back into the environment, helping recycle nutrients. Bacteria and fungi are classic examples. Detritivores, like earthworms, do ingest and physically break down detritus, but true decomposition refers to the enzymatic breakdown of complex molecules outside the organism. Phototrophs are producers that make organic matter from light or chemical energy, not breakers-down of dead material, and herbivores eat living plant material rather than dead matter.