Question

A food chain generally starts with-

• A. decomposers
• B. nitrogen-fixers
• C. photosynthesizing organisms
• D. herbivores

Answer 1

The correct option is C

photosynthesizing organisms

The correct option is C

Explanation of correct option

1. The food chain describes the flow of energy and nutrients in an ecosystem.
2. Plants and algae produce food and store it in the form of starch by a process called photosynthesis.
3. These organisms consist of chlorophyll, a green pigment that facilitates photosynthesis.

Explanation of incorrect option:

Option A

Decomposers are organisms that break down dead or decaying organisms. Examples- Fungi, bacteria, worms, etc.

Option B

Nitrogen fixers are microorganisms that are involved in nitrogen fixation. Examples- Clostridium, Azotobacter, etc.

Option D

Herbivores are animals that feed on plants. Examples- cow, deer, goat, etc.

Final answer:

A food chain starts with photosynthesizing organisms.