Standard Science Primary 6 Interactions

Study the food web below. If a disease kills all of Organism X, what will happen to the population of Organism Y?

A It will increase because there is more food.
B It will decrease because its predator has increased.
C It will decrease because its food source is gone.
D It will remain the same because Y does not eat X.
Show Worked Solution

Worked Solution

Step 1: Analyze the arrow from X to Y. This means Y eats X. Step [2-9]: If X is removed, Y loses its food source. Step [2-9]: Therefore, the population of Y will decrease due to starvation.

Correct answer: It will decrease because its food source is gone.

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