Question

Which of the following act as ‘nature’s scavengers’?
A. Man
B. Rat
C. Insects
D. Microorganisms

Answer 1

Hint: A organism that can consume decaying biomass is known as scavengers. They derive energy and nutrients and break down organic matter.

Complete answer: The most important role is played by decomposers in the ecosystem. They are part of the food chain and form a trophic level.
1. They absorb nutrients that were trapped in dead and decaying matter and derive energy.
2. They are known as nature’s scavengers.
3. They are very crucial for releasing nutrients from dead and decaying matter into the environment so that they can enter into the biogeochemical cycle.
4. They maintain the circulation of minerals into the environment.
5. In the early stages of decomposition, bacteria play an important role when moisture is high. Bacillus subtilis and Pseudomonas fluorescence common decomposing bacteria.
6. In the later stages, fungi dominate.

Hence, the correct option is (D) Microorganisms.

Note: Decomposers are at the end of the food chain and their activities make minerals available for other living organisms such as producers.