Question

In an ecosystem, decomposers includes

• A. Microscopic organisms
• B. Algae
• C. Bacteria & fungi
• D. All plants

Answer 1

The correct option is C Bacteria & fungi

Decomposers include microorganisms such as bacteria and fungi, which obtain nutrients by breaking down the remains of dead plants and animals. Decomposers eventually convert all the organic matter into carbondioxide and nutrients like nitrogen, phosphorous, magnesium etc. These nutrients are then used by algae and other plants for their growth.

Bacteria are single-celled microscopic organisms. Fungi are often larger organisms that include molds and mushrooms. They both cause decay by releasing enzymes onto the dead animal or plant. These break down complex compounds into simple soluble ones that can be absorbed by decomposers. Organisms that feed on dead material in this way are called saprophytes.

So, the correct answer is 'Bacteria & fungi'.