Year 10 evolution topic test

A giraffe has a long neck in order to better reach leaves to eat.  This is an example of _____. 

• an adaptation
• environment
• response
• stimulus

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Which of the following is a physical adaptation for the underlined animal?

• A butterfly has bright colors to warn predators that it is poisonous.
• A hognose snake rolls over, slows its breathing, and hangs its tongue out to play dead.
• A herd of buffalo encircle their young to protect them from a pack of wolves.
• A dung beetle rolls a piece of dung across the desert.

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How do adaptations help animals?

• To escape animals
• to hunt for food
• to survive in their habitats
• All of these are correct

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Differences between members of the same species are called

• predators
• traits
• selections
• variations

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A species is a group of similar organisms that

• Can mate with each other and produce fertile offspring
• can live together on an island
• can migrate to an island from the mainland
• all have exactly the same traits.

how does natural selection lead to evolution?

• stronger offspring kill weaker members of the species.
• helpful variations accumulate among surviving members of the species.
• Overproduction provides food for stronger members of the species.
• environmental changes favor weaker members of the species

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Which term refers to similar structures that related species have inherited from a common ancestor? 

• DNA sequences
• Developmental organisms
• Homologous structures
• punctuated equilibria

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When a new species evolves from an existing species like the finches on the Galapagos Islands, is called _____.

• Natural selection
• genetic engineering
• theory
• species

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A _____ is a physical structure that was fully developed and functional in an earlier group of organisms but is reduced and unused in later species.

• petrified
• homologous structure
• embryo
• vestigial organ

The theory of ____ states that species evolve slowly over a relatively slow time.

• behavioral
• evolution
• adaptation
• speciation