Q. Consider the following organisms:

1. Bacteria
2. Fungi
3. Virus

Which of the above are considered decomposer organisms?
Answer: Only 1 and 2
Notes: Bacteria and fungi act as decomposer organisms by breaking down dead and decaying matter, thus recycling nutrients in an ecosystem. Viruses, however, are not decomposers; they require living hosts to replicate and do not play a direct role in decomposition processes.