Question

Which of the following constitute a food-chain?
A. Grass, Wheat and Mango
B. Grass, Goat and Human
C. Goat, Cow and Elephant
D. Grass, Fish and Goat

Answer 1

Hint: It is the process of transferring matter as well as energy in the form of food from producers ending on decomposers. It has the presence of energy sources, producers, consumers and decomposers.

Complete Answer:
- As it is clear from the given option that grass is a producer but wheat and mango are not consumers. These are items eaten but do not eat lower level components.
- Now in this option grass is produced whereas goats are a primary consumer and humans are secondary consumers. This makes it a proper food chain with the presence of the majority of the components of the food chain.
- In this option goat, cow and elephant all are primary consumers which means only one component is present.
- In this grass is a producer and fish and goats are primary consumers with presence of two components only.

So, the correct option is B as the maximum number of components present in it.

Note: The food chain to be perfect there should be the presence of producers, primary consumers and secondary consumers as well.