Question

The selective agent that was responsible for causing the change in peppered moth was ______.

Options

• Lichens

• Humans

• Birds

• Smoke

Answer 1

The selective agent that was responsible for causing the change in peppered moth was smoke.

Explanation:

Previously, light-winged moths outnumbered dark-winged moths due to their ability to avoid predators. However, with industrialisation, dark-winged moths were able to evade predators, while light-winged moths became prey. As a result, the smoke worked as a selective agent.