EVOLUTION
DARWIN’S THEORY OF NATURAL SELECTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Dark-colored moths were attracted to the dark tree trunks
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Factory pollution killed the light-colored moths
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Dark-colored moths fed on the pollution
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Birds ate more light-colored moths because they were easy to spot
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Detailed explanation-1: -During the Industrial Revolution pollution from factories darkened tree trunks. By 1886 dark-colored moths were common and light-colored moths were rare. What caused this change in the moth population? Dark-colored moths were attracted to the dark tree trunks.
Detailed explanation-2: -Scientists have discovered the specific mutation that famously turned moths black during the Industrial Revolution. In an iconic evolutionary case study, a black form of the peppered moth rapidly took over in industrial parts of the UK during the 1800s, as soot blackened the tree trunks and walls of its habitat.
Detailed explanation-3: -Rather than cause the black color mutation, the sooty conditions of the Industrial Revolution created the perfect backdrop for black moths to survive. As soot covered surfaces throughout Britain, black moths blended in with their background, escaping notice by predators and thriving.
Detailed explanation-4: -But as the Industrial revolution began to really take off in the 1800s, pollution from the dense industrial smoke and soot killed off lichens and darkened tree trunks and walls in towns and cities. As a result, the paler moths became more visible to predators, while the darker variety became more camouflaged.
Detailed explanation-5: -The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution.