Q.

If a grasshopper is eaten by a frog, then the energy transfer will be from:

1 producer to decomposer  
2 producer to primary consumer  
3 primary consumer to secondary consumer  
4 secondary consumer to primary consumer  

Ans.

(3)

If a frog eats a grasshopper, energy is transferred from primary consumer to secondary consumer in a food chain. Grasshoppers eat producers, such as grass and plants. So, it is classified as a primary consumer. As a result, frogs, which eat grasshoppers, become the secondary consumer.