Question

Which of the following correctly represents the flow of energy in a grassland ecosystem?

• A. Grass → Frog → Snake → Grasshopper
• B. Grass → Frog → Grasshopper → Snake
• C. Grass → Grasshopper → Snake → Frog
• D. Grass → Grasshopper → Frog → Snake

Answer 1

The correct option is D

Grass → Grasshopper → Frog → Snake

Grass → Grasshopper → Frog → Snake

The general structure of food chain is as follows:
Producer $\to$ Primary consumer $\to$ Secondary consumer $\to$ Tertiary consumer

Grass is the producer as it can prepare its own food. Grasshopper is the primary consumer as it feeds only on green plants. Frog is the secondary consumer as it feeds on grasshopper. Snake feeds on frog and is called as the tertiary consumer.