Unity & Diversity LT3-4 Review

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What are Analogous Structures?

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Structures in different species that have similar functions but different evolutionary origins. Example: Wings of bats and birds.

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What are Vestigial Structures?

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Structures that have lost most or all of their original function through evolution. Example: Human appendix.

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NGSS.MS-LS4-2

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What are Holomologous Structures?

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Structures that are similar in different species due to shared ancestry. Example: Forelimbs of humans, whales, and bats.

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NGSS.MS-LS4-2

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What are Adaptive Structures?

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Features that have evolved to help an organism survive in its environment. Example: The long neck of a giraffe for reaching high leaves.

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NGSS.MS-LS1-4

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What is embryonic development in animals?

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The process by which an embryo forms and develops, showing similarities among different species in early stages.

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NGSS.MS-LS4-3

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What is the significance of studying animal structures?

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It helps scientists understand evolutionary relationships and how species adapt to their environments.

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NGSS.MS-LS4-2

NGSS.MS-LS4-4

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What is the difference between homologous and analogous structures?

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Homologous structures share a common ancestry, while analogous structures serve similar functions but do not share a common ancestry.

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NGSS.MS-LS4-2

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What is an example of a vestigial structure in whales?

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Pelvic bones, which are remnants of hind limbs.

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NGSS.MS-LS4-2

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How do analogous structures provide evidence for evolution?

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They show how different species can evolve similar traits to adapt to similar environments.

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NGSS.MS-LS4-2

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What role do adaptive structures play in survival?

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They enhance an organism's ability to survive and reproduce in its specific environment.

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NGSS.MS-LS4-4