Darwin's Finches

How does natural selection drive evolution?

• It does not; natural selection and evolution are entirely separate processes

• Before they can reproduce, individuals must adapt certain traits through natural selection.

• Within a generation, natural selection causes populations to eliminate unfavorable traits.

• Over time, natural selection causes living populations to evolve environmental adaptations.

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Which statement about adaptations is true?

• They are inherited.

• They are developed quickly.

• They cannot change over time.

• They are the same in every species.

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What was Darwin's designated role on the Beagle?

• documenting the journey as the ship's journalist

• studying animals and plants as the ship's naturalist

• providing food for the crew as the ship's cook

• taking care of the passengers as the ship's surgeon

What question regarding the traits of Galápagos finches did Darwin consider for many years?

• How had an original finch been modified in different ways for different purposes?

• Why were these finch species only found in certain parts of the world?

• Why couldn’t finches with narrow beaks consume a diet of seeds in addition to insects?

• How did this great variety of finch species survive in the same ecosystem?

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What did Darwin find especially remarkable about species of the Galápagos Islands?

• All of these species were birds.

• These species had very little biodiversity.

• Darwin could not study these species without the assistance of other naturalists.

• Many of these species resembled mainland South American species

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When individuals with certain inherited traits are more likely to survive and reproduce than those with less favorable traits, ______ occurs.

• genetic selection

• natural selection

• favored survival

• struggle for existence

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After the Beagle's voyage ended, Darwin spent time thinking about the ______ of Galápagos finches.

• beauty

• habitats

• rarity

• traits

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What led Darwin to his idea of natural selection?

• Individuals had certain traits that made them more successful.

• The Galápagos finches had a unique method of adaptation.

• Ecosystems with limited resources fostered great biodiversity.

• All of the above

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What type of bird was the subject of many Darwin's observations:(singular form)

(a)  

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Darwin concluded that 13 species of finches on the Galapagos Islands

• were identical to 13 species found in Ecuador and surrounding countries

• probably evolved from one original South American species.

• had adapted to the same food.

• probably evolved from one original South American species.

  AND

  had adapted to the same food.

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