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Question
Assertion :Moths living in the industrial areas became dark to match body colour to the tree trunks. Reason: Smoke from industries covers the moths, making them appear dark.
Assertion :Moths living in the industrial areas became dark to match body colour to the tree trunks. Reason: Smoke from industries covers the moths, making them appear dark.
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Solution
The correct option is D Both Assertion and Reason are incorrect
Industrial melanism is the increase of melanic (dark) forms of an animal in the areas darkened by industrial pollution. The most common example is of peppered moth which existed in two strains (forms) : light coloured (white) and melanic (black). In the past, bark of trees were covered by whitish lichens, so white moths escaped unnoticed from predatory birds. After industrialization bark got covered by smoke, so the white moths were selectively picked up by birds. But black moths escaped unnoticed so they managed to survive to result in more population of black moths and less population of white moths. Thus, industrial melanism supports evolution by natural selection.So, the correct answer is 'Both Assertion and Reason are incorrect'.
Industrial melanism is the increase of melanic (dark) forms of an animal in the areas darkened by industrial pollution. The most common example is of peppered moth which existed in two strains (forms) : light coloured (white) and melanic (black). In the past, bark of trees were covered by whitish lichens, so white moths escaped unnoticed from predatory birds. After industrialization bark got covered by smoke, so the white moths were selectively picked up by birds. But black moths escaped unnoticed so they managed to survive to result in more population of black moths and less population of white moths. Thus, industrial melanism supports evolution by natural selection.
So, the correct answer is 'Both Assertion and Reason are incorrect'.
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