Which of the following group/s constitute a food chain?

A. Grass, Cow and Elephant

B. Grass, Deer and Lion

C. Grass, Grasshopper, Frog and Snake

D. Grass, Goat and Human

Choose the most appropriate answer from the options given below:

The correct answer is B, C and D only.

Key Points

• A food chain represents a sequence of organisms where each organism is a source of food for the next in the chain.
• Option B (Grass, Deer, Lion) forms a food chain: Grass is eaten by Deer, and Deer is preyed upon by Lion.
• Option C (Grass, Grasshopper, Frog, Snake) forms a food chain: Grass is eaten by Grasshopper, Grasshopper is eaten by Frog, and Frog is eaten by Snake.
• Option D (Grass, Goat, Human) forms a food chain: Grass is eaten by Goat, and Goat is consumed by Humans.

Additional Information

• Food Chain:
  • A food chain shows the linear flow of energy from one organism to another.
  • Each step in a food chain is called a trophic level.
  • Producers (such as grass) occupy the first trophic level.
• Producers and Consumers:
  • Producers are organisms that produce their own food through photosynthesis (e.g., grass).
  • Primary consumers eat producers (e.g., deer, grasshoppers).
  • Secondary and tertiary consumers eat primary consumers and other secondary consumers (e.g., lions, snakes).
• Importance of Food Chains:
  • Food chains help in understanding the energy flow and nutrient cycling in an ecosystem.
  • They illustrate the interdependence of organisms within an ecosystem.
• Food Webs:
  • A food web is a complex network of interconnected food chains in an ecosystem.
  • They provide a more realistic representation of energy flow compared to simple food chains.