Questions and Answers
Name 3 traits other than beak characteristics that could contribute to the ability of a finch to compete successfully.
speed, claws, strength, and eye sight
Which of the following are beak variations? (Select all that apply)
Why did some beak types survive on the new island when they couldn't survive on the original island?
The beaks did not have characteristics for picking up small seeds.
Did those who were successful in Round One survive equally well when others were competing for food at the same dish during Round Two?
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Why were there fewer survivors at the end of Round Three?
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What is the synonym for variations in the context of finches?
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What does competition mean in the context of finch feeding?
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What does struggle for survival imply in ecological terms?
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What is adaptation for finches?
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What does environment refer to in the finch study?
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What are selection agents in the context of finches?
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Predict which species of finch would be most likely to survive if the weather on the Galapagos Islands gradually changed and the seeds available to the finches became larger with heavier coverings.
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What two types of food would you expect to be available on this island?
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Would you expect the two species to compete for food on this island?
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How might the two native finch populations be affected if several dozen Sharp-billed Ground Finches were to migrate to the island and survive?
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Explain how an island could support large populations of both Large Ground Finches and Small Ground Finches.
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How could you use the materials provided in this lab to test your explanation?
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Study Notes
Finch Traits and Variations
- Traits influencing finch competition include speed, claws, strength, and eyesight.
- Major beak variations: wide beak, long beak, round beak.
Survival Factors and Competition
- Some beak types thrived on the new island due to their adapted characteristics for larger seeds.
- Increased competition led to fewer survivors in subsequent rounds of food availability.
Competition Dynamics
- Successful finches from the first round faced greater challenges in the second round due to heightened competition.
- The struggle for survival highlights that not all individuals will survive due to limited resources.
Adaptations and Environmental Influence
- Beak adaptations are crucial for finch survival in varying environments.
- Environmental factors include available food sources such as dishes, seeds, and other competing students.
Selection Pressures
- Selection agents influencing survival consist of seed size and beak size, determining fitness for specific food sources.
- The Large Ground Finch is predicted to survive better if conditions shift towards larger seeds.
Food Resource Availability
- Expected food types on the island are both plant and animal-based.
- Different species of finches are unlikely to compete for the same food due to dietary preferences.
Impact of New Species
- Introduction of Sharp-billed Ground Finches could intensify competition, affecting food availability for native species.
Coexistence of Finch Populations
- Large populations of both Large Ground Finches and Small Ground Finches can coexist by utilizing different seed sizes from various plants.
Experimental Approach
- The lab materials, such as beaks and seeds, can be utilized to visually demonstrate survival dynamics for the respective finch populations.
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Description
Explore the fascinating traits of finches in this quiz on beak variations and survival strategies. Learn about the other traits that aid in competition and understand the reasons behind the success of different beak types in varying environments. Perfect for students studying evolution and adaptation.
