Natural Selection Quiz #1

Which of the following is a true statement about natural selection?

• it is goal directed
• individuals evolve
• variation exists in a population
• acquired characteristics

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a bird that can easily outcompete other birds for food and that can produce many eggs has a high

• sexuality
• mutation rate
• fitness
• adaptability

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When scientists compare animals currently living on different continents, they often find those with similar characteristics, who are not actually close relatives, living in similar environmental conditions even though they are geographically very distant. One example is the Anteater/Armadillos of the Americas and the Pangolin of Africa. What can we deduce from this evidence?

• Living things can adapt similarly to similar environments over time.
• Living things do not change over time
• They must all have the same recent common ancestor
• I don’t know

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If a sick person takes an antibiotic but it doesn't kill all of the bacteria causing the sickness, what might explain this?

• Variations in the bacteria allowed some organisms to be less affected by the antibiotic.

• Bacteria cannot be killed by antibiotics

• You cannot cure a bacterial infection

• Bacteria do not cause sicknesses

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Why are advantageous traits more likely to be passed onto offspring?

• Because they are more likely to survive and reproduce.
• Because they look cooler.
• Because they come from recessive alleles.
• Because the trait is an acquired phenotype.

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The ability of an organism to survive and reproduce is known as...

• Adaptation
• Trait
• Fitness
• Variation

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A grizzly bear survives because he is well-adapted to his environment. When he reproduces he passes on those traits to his offspring. this process is called

• Natural Selection

• Selective Breeding

• Random mutations

• Variations in a species

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A species of moth in England has both a light-colored form and a dark-colored form. In the mid-1800s, the percentage of dark-colored moths increased in areas where black soot from factories covered the trees. The soot in these areas has decreased in more recent times as a result of pollution laws.

Which of the following statements describes what has most likely happened to the moth populations in these areas?

• The moth populations became extinct

• The moths migrated south.

• The percentage of light-colored moths in the populations decreased.

• The percentage of dark-colored moths in the populations decreased.

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The Asian shore crab invaded parts of the eastern coast of the United States about 15 years ago. The Asian shore crab preys on blue mussels. In the time since the Asian shore crab arrived, the average shell thickness of the blue mussel population has increased.Which of the following is the most likely reason that this increase in shell thickness has occurred?

• Blue mussels with thick shells attract more crabs that mussels without thick shells.

• Blue mussels with thick shells grow in larger colonies than mussels without thick shells.

• Blue mussels with thick shells catch more food per day than mussels without thick shells.

• Blue mussels with thick shells survive and reproduce more successfully than mussels without thick shells.

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Why do peppered moths tend to be the same color as the trees on which they live?

• The coloring goes along with tasting like the tree. 
• It keeps the moth the same temperature as the tree. 
• It makes the moths faster than the birds
• It makes the moths harder to see.

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