science
Grade-5
Easy

Question

In an aquarium, fish eat shrimp, and a shark eats fish. What would happen to the population of shrimp if the shark was removed from the aquarium?

  1. Decrease 
  2. Increase     
  3. Stay the same 
  4. Increase and then decrease

hintHint:

Imbalance in the feeding process of the food chain disturbs the whole food chain.

The correct answer is: Decrease


    • If the shark were removed from the aquarium, the shrimp population would decrease.
    • In a food chain, one organism survives by feeding on another organism. Any sort of imbalance in this process would eventually lead to an imbalance in the population of the concerned organisms. 
    • According to the question, if we remove the shark from the aquarium, then the population of fish will increase because there will be no predators for the fish. 
    • At the same time, since the population of fishes will increase, and they feed on shrimps, thus, the fishes will continue to eat as many shrimps as possible which will lead to a decline in the shrimp population. 

    The balance of the ecosystem is dependent on all biotic and abiotic sources. One cannot survive without the other. If a particular population declines, it affects the whole ecosystem.

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