In the early 1800's, peppered moths living in England rested on tree trunks that were Covered with whitish lichens growing on the trees. The moths were also whitish in color and so matched the color of the background on which they rested. This made the moths less visible to the birds that preyed on them. In the late 1840's, an increasing number of very dark moths began to appear in moth populations near cities where pollution had killed most of the light-coloured lichens that had been growing on the tree trunks, leaving the tree trunks sooty and black. Over the past 100 years, the frequency of dark moths has increased to as much as 98% in populations near polluted cities. MWhat type of selection has operated on moths in the polluted areas since 1840? sexual selection stabilizing selection KID directional selection RID disruptive selection artificial selection

In the early 1800's, peppered moths living in England rested on tree trunks that were Covered with whitish lichens growing on the trees. The moths were also whitish in color and so matched the color of the background on which they rested. This made the moths less visible to the birds that preyed on them. In the late 1840's, an increasing number of very dark moths began to appear in moth populations near cities where pollution had killed most of the light-coloured lichens that had been growing on the tree trunks, leaving the tree trunks sooty and black. Over the past 100 years, the frequency of dark moths has increased to as much as 98% in populations near polluted cities. MWhat type of selection has operated on moths in the polluted areas since 1840? sexual selection stabilizing selection KID directional selection RID disruptive selection artificial selection

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter23: Fungi

Section: Chapter Questions

Problem 1DAA

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Scientists have studied, in detail, the evolution of the peppered moth, Biston betularia, over the last two hundred years. The peppered moths rest on tree trunks and are a tempting treat for birds in the area. In the mid-1800s the trees in their England habitat were covered with lichens, which are a light, grayish-green color. Although color variations occurred, the vast majority of the moths were light-colored. Because their light coloration effectively camouflaged them against the lichens-covered trees, they were not as easily seen by birds as darker colored moths. The light colored moths flourished.The environment changed, as the Industrial Revolution progressed. By 1900, the lichens had died and trees were coated with soot due to industrial pollution. The lighter colored moths were no longer "hidden" in their environment, and in fact, were easily seen by their predators. Their numbers dwindled. At the same time, the darker-colored moths flourished because of their ability to hide…
Lichens are said to be composite organisms made up of two very different types of organisms: usually a fungus and an alga (or in a few lichens, a fungus and a Cyanobacterium). (Alga is the singular of algae.) How do these two types of organisms work together to become a functional composite organism? That is, what does each organism provides to the relationship to make it successful? Think about a lichen living on the face of a rock.
Coral bleaching occurs when_____.. coral turns white and dies
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Label a dead leaf butterfly
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