Multiple choice

Which of the following microorganisms feed upon dead plants and animals?

  1. Bacteria and protozoa

  2. Bacteria and algae

  3. Bacteria and fungi

  4. Algae and fungi

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bacteria and fungi are the primary decomposers in an ecosystem. They break down complex organic matter from dead plants and animals into simpler substances, recycling nutrients back into the soil.