With reference to the food chains in ecosystems, which of the following kinds of organism is/are known as decomposer organism/organisms?<br/>1. Virus<br/>2. Fungi<br/>3. Bacteria<br/><br/>Select the correct answer using the codes given below:

1. Virus — Viruses are acellular obligate parasites; they do not independently break down dead organic matter in ecosystems. Verdict: Incorrect.

2. Fungi — Fungi are classic decomposers; they secrete enzymes and decompose dead plants and animals. Verdict: Correct.

3. Bacteria — Many bacteria act as decomposers by breaking down organic matter and recycling nutrients. Verdict: Correct.

Hence, 2 and 3 only are decomposer organisms.