Q.

In an ecosystem, if a species of secondary consumers is affected by a deadly disease, this will affect the ecosystem by _________.

1 giving more opportunity of survival to the prey of the secondary consumer  
2 giving more opportunity of survival to the predators of the secondary consumer  
3 disturbing the food chain of which the secondary consumer is a part  
4 decreasing the population of the producers  

Ans.

(3)

Change in the population of the organism at any trophic level can distress the whole food chain in the ecosystem. This can be detrimental to the balance of energy transfer in the ecosystem.