HMH Mod D, Unit 2, Lesson 2 Natural Selection

1.  Darwin observed 13 species of finches on the Galapagos Islands.  What did Darwin conclude about the finches?

• a.  They evolved from a common ancestor.
• They all came from different continents.
• they evolved from 13 different types of birds.
• they developed from other types of organisms.

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1.  Which statement best describes the process of evolution?

• Populations can survive in different locations.
• Populations grow when resources are plentiful
• Conditions limit the number of species on earth.
• The characteristics of a species can change over time.

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1.  Why did the population of peppered moths in England change from light to dark after the Industrial Revolution?

• Light moths were killed by soot.
• Dark moths were produces by industrial processes.
• The birds that ate the dark moths were killed by the soot.
• Light moths were more obvious against the soot-stained trees.

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1.  Which is a condition required for natural selection to occur in birds?

• Humans must interfere with the breeding of organisms.
• Species must produce more offspring than can survive.
• Resources must be unlimited in the natural environments.
• All organisms of the same species must have the same genetic material.

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1.  Modern horses developed their traits through natural selection.  What occurs during the process of natural selection?

• only the fittest organisms survive and reproduce
• organisms choose mates from other species
• breeders cross organisms with desirable traits.
• organisms remain exactly the same over many generations.

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Which of these would be considered an adaptation of an animal that lives in the snowy tundra?

• a thick coat
• green colored skin
• large, flat leaves
• webbed feet

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Which is the best description of a physical adaptation?

• a way an animal acts that helps it to survive in its environment.
• a basic need that an animal must have from its environment.
• a part of an animal's body that helps it to survive in its environment.
• none of the above

In which scenario could natural selection occur?

• a wolf with a heavy fur coat survives harsh winters better than other wolves and passes the trait on
• a woodpecker learnes how to eat a new type of beetle.
• a shark receives a neutral mutation
• a mother passes a deadly mutation on to her child.

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How does natural selection lead to the spread of an adaptation?

• adaptations can be taught to offspring
• better adapted organisms live longer and have more offspring than other organism
• better adapted organisms kill competing organisms off
• adaptations can be traded between organisms.

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Farmers often make observations about the traits of their plants as they practice selective breeding.  A farmer might practice selective breeding to produce corn plants that

• use more water
• all look the same
• are resistant to disease
• can grow human proteins

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