Shortly after the start of the Industrial Revolution, in the area around Manches

Question

Shortly after the start of the Industrial Revolution, in the area around Manchester. England, industrial pollution killed the lichens that covered the tree trunks and soot settled on the bark causing the formerly light-colored tree trunks to become dark in color After that, in the local population of peppered moths, dark-colored moths soon began to outnumber light-colored ones. What was the most likely) explanation of what brought this change in the wing color of the moths ? a Light-colored moths migrated to other locutions b. Insect-eating birds could easily see (and cat) light colored moths against the now dark trunks. c. Dark-colored moths were faster fliers and could dodge the birds easier. d. The increased warmth of the dark-colored trunks drove away the light colored months. Plants have no defenses agains insects and other annuals Ling the leaves and other parts.

Explanation / Answer

(19) Insect eating birds could easily see light colored moths against the now dark trunks.

The light pepper moths were getting spotted easily against the dark background and predators started eating these light colored moths easily and thus the dark ones started outnumbering them.

(20) False

Plants have defenses against insects and other animals eating their leaves and other parts. Plants produces the secondary metabolites (allelochemicals) to repel the plant eating insects or animals and also plants try to grow in locations where herbivores cannot reach them easily. Some plants by having claws, spines or suckers will drove away their enemies and some plants by smelling differently will not allow animals to come near to them.

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