Bio 9 Review-Evolution

Evolution refers to change over a long period of time in

• a fossil
• a population
• an embryo
• a rock

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Fossils provide evidence that

• life on Earth millions of years ago was more complex than life is today
• the changes that will occur in species in the future are easy to predict
• many species of organisms that lived long ago are now extinct
• most species of organisms that lived long ago are exactly the same today

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Base your answer to the question on the diagram below and on your knowledge of biology.
A finch that picks small insects out from cracks in the bark of trees would most likely have a beak that is

• sharp and thin
• sharp and thick
• rounded and thin
• rounded and thick

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A male frigatebird displays to the female by inflating its large red throat sac, throwing its head back, vibrating its wings, and producing a “drumming” sound with its throat sac. For the frigatebird, this behavior has most likely resulted in

• hiding from predators
• greater reproductive success
• locating new sources of food
• reduced population growth

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Evolution can occur at different rates; however, for evolution to occur, there must be

• variations within a species
• extinction of the species
• asexual reproduction
• no change in the genes of an organism

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Natural selection is best described as

• a change in an organism in response to a need of that organism
• a process of nearly constant improvement that leads to an organism that is nearly perfect
• differences in survival rates as a result of different inherited characteristics
• inheritance of characteristics acquired during the life of an organism

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Base your answer to the question on the diagram below and on your knowledge of biology.
Which statement is a basic assumption from The Beaks of Finches lab?

• The type of beak indicates the type of food the finch eats.
• Different birds have different songs.
• Birds with larger beaks can find mates more easily.
• Nesting behavior of finches is an inherited trait.

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Which occurrence represents an example of evolution?

• Exposure to radiation reduces the rate of mutation in leaf cells.
• A mutation in a liver cell causes a person to produce an enzyme that is less efficient.
• Cells in a zygote eventually change into bone cells or skin cells.
• Some antibiotics are almost useless, because pathogens have developed a resistance to these antibiotics.

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A farmer wanted to rid his apple trees of a particular leaf-eating insect. He sprayed his trees with an insecticide that killed 98% of the insects. The survival of 2% of this population of insects is most likely due to

• genes obtained from another species
• certain chemicals that stimulated overproduction
• variations that resulted from sexual reproduction

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Many animals have developed courtship behaviors. Males will often dance, swim, or sing in a particular way to attract a female. Males who are more successful at the courtship behavior will have a greater chance of having more offspring. This behavior is a result of

• natural selection
• genetic engineering
• asexual reproduction
• gene manipulation

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