An example of Natural Selection is industrial melanism. Give suitable answer to
the following questions on industrial melanism : 4
(a) Before industrial revolution, which variety of the peppered moth could be
easily detected by the birds and eaten up?
(b) How did this variety arise and why was it detected by the birds easily?
(c) Why did this variety increase after industrial revolution?
(d) What role did Natural Selection play in this increase? Answer ASAP!!
Dear Student
(a) Dark colored moth were easily detected by birds and eaten up before industrial revolution.
(b) During initial stage of industrial melanism, light colored moth became dark colored moth. Tree trunks were not affected by pollution and dark colored moth were easily visible to the birds.
(c) After industrial revolution, tree trunks became dark because of soot and other industrial wastes. Light colored moth could not hide themselves from predators and dark colored moth were able to camouflage. Hence, they survived and increased in number.
(d) Light colored moth could not camouflage to avoid predators, this sudden change in environment made them highly vulnerable to predators. Light coloured moth became rare and dark colored moth became abundant. This is because of natural selection.
Regards
(a) Dark colored moth were easily detected by birds and eaten up before industrial revolution.
(b) During initial stage of industrial melanism, light colored moth became dark colored moth. Tree trunks were not affected by pollution and dark colored moth were easily visible to the birds.
(c) After industrial revolution, tree trunks became dark because of soot and other industrial wastes. Light colored moth could not hide themselves from predators and dark colored moth were able to camouflage. Hence, they survived and increased in number.
(d) Light colored moth could not camouflage to avoid predators, this sudden change in environment made them highly vulnerable to predators. Light coloured moth became rare and dark colored moth became abundant. This is because of natural selection.
Regards