Question

Which one of the following correctly represents a food chain?

• A. Grass-Grasshopper-Frog-Snake-Eagle
• B. Grass-Grasshopper-Eagle-Snake-Frog
• C. Grass-Eagle-Frog-Snake-Grasshopper
• D. Grass-Snake-Frog-Eagle-Grasshopper

Answer 1

The correct option is A

Grass-Grasshopper-Frog-Snake-Eagle

The correct option is A.

Explanation of the correct option:

1. The food chain is a linear flow of energy from one level to another.
2. Energy flow is unidirectional.
3. The food chain regulates the flow of energy in the form of food from one organism to another.
4. The grass is the producer placed at the bottom of the food chain followed by the primary consumer.
5. Grasshopper is the primary consumer that feeds on the producer i.e. grass.
6. Grasshopper is eaten by the secondary consumer frog which in turn is eaten by the tertiary consumer snake.
7. Eagle, being the quaternary consumer and a carnivore is placed at the top of the food chain.

Explanation of the incorrect option:

Option B:

The placement of the eagle is wrong as a snake doesn't feed upon an eagle.

Option C:

The eagle is placed wrongly as the eagle doesn't feed upon the grass.

Option D:

The placement of the snake is wrong as the snake is not a primary consumer.

Final answer: Grass-Grasshopper-Frog-Snake-Eagle correctly represents a food chain.