CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
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.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Assertion is correct but Reason is incorrect
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Both Assertion and Reason are incorrect
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
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'.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Concepts and Practice
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon