Question

Observe the following food chain.

Ice algae $\to$ Zooplankton $\to$Arctic cod fish$\to$ Seals$\to$ Polar bear

What will happen if ice melts and the ice algae population drops down?

• A. Arctic cod fish population will decrease
• B. Seal population will increase
• C. Polar bear population will increase
• D. Polar bear population will decrease

Answer 1

The correct option is A Arctic cod fish population will decrease

$\bullet$ Food chain is a series of organisms with a relationship of who eats what.
$\bullet$ Therefore, when the population of sea algae drops down, every organism in the chain that depends on it for food will eventually face the scarcity of food.
$\bullet$ Thus, the population of the consumers i.e. zooplankton, arctic cod fish, seal and polar bear will decrease.