The Beaks of Finches

According to the theory of natural selection, why are some individuals more likely than others to survive and reproduce? 

• Some individuals pass on to their offspring new characteristics they have acquired during their lifetimes. 
• Some individuals are better adapted to exist in their environment than others are. 
• Some individuals do not pass on to their offspring new characteristics they have acquired during their lifetimes. 
• Some individuals tend to produce fewer offspring than others in the same environment. 

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Base your answer(s) to the following question(s) on the diagram below and on your knowledge of biology.

Several of the Galapagos Islands are inhabited by grasshoppers, beetles, flies, bees, and butterflies. Finches that feed on these consumers would have beaks adapted for

• probing, only

• probing or grasping

• crushing or probing

• parrotlike feeding or grasping

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The different tools used during the beaks of finches lab represented

• different beak adaptions in finches

• nest construction adaptations

• variations in seed size

• variations in ecosystems

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"Survival of the Fittest" describes which theory

• a) natural selection
• b) gravity
• c) heredity
• d) string theory

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What is the advantage of having different shaped beaks?

• To look different from other species.
• To be able to eat the food readily available in the environment.
• To protect itself against predators.
• To protect itself against prey.

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Mutations are a change in what?

• DNA
• tRNA
• genotype
• phenotype

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Individuals in a population have to compete for resources.

• Species
• Variation
• Mutation
• Competition

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Base your answer(s) to the following question(s) on the diagram below and on your knowledge of biology.
Which two finches would compete the least for food? 

• small ground finch and large ground finch 
• large ground finch and sharp-billed ground finch 
• small tree finch and medium ground finch 
• vegetarian finch and small ground finch 

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Base your answer(s) to the following question(s) on the diagram below and your knowledge of biology.  Which species of finch has an edge-crushing bill that can also probe into plants for food? 

• cactus finch 
• sharp-billed ground finch 
• warbler finch 
• large ground finch 

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Base your answer to the following question on the finch diversity diagram below and on your knowledge of biology.  Warbler finches are classified as 

• producers 
• herbivores 
• carnivores 
• decomposers 

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