A)
B)
C)
D)
Correct Answer: A
Solution :
In predator-prey relationship, one species (the predator) consumes another species (the prey). Such predator-prey relationship tends to keep the populations of both species (prey and predator) in balance. As the prey population increases, there is more food for predators. So, after a slight lag, the predator population increases as well. As the number of predators increases, more prey are captured. As a result, the prey population starts to decrease. So, after a lag, the predator population also decreases due to less availability of food. This is represented in the graph given in option [a].
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