Tri. 3 Week 4 (A): Embryology

What does the study of embryology suggest about different species?

• They have no common ancestry

• They have a common ancestry

• They are all completely unrelated

• They are all genetically identical

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What does the similarity in early embryonic structures of fish, reptiles, birds, and mammals support?

• Creationism

• Intelligent Design

• Evolution

• Spontaneous Generation

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How is embryology used as evidence for evolution?

• By studying embryos from different species and revealing similarities in early development

• By analyzing adult organisms from different species and comparing their physical characteristics

• By observing the behavior of animals in their natural habitats

• By examining the fossil record of extinct species

What is a fossil?

• A type of rock

• The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock

• A modern animal

• A painting of an animal

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Why are fossils important for understanding evolution?

• They show how modern technology has changed

• They provide evidence of past life forms and their environments

• They are not important for understanding evolution

• They help in finding oil

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What does comparative anatomy study?

• The differences in anatomy among modern devices

• The similarities and differences in the anatomy of different organisms

• The anatomy of humans only

• The study of rocks

What is a homologous structure?

• Structures in different species that are similar because of common ancestry

• Structures that look different and serve different functions in different species

• A type of fossil

• A structure found only in humans

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What is an example of a homologous structure?

• The wings of a bird and the wings of a butterfly

• The beak of a bird and the teeth of a mammal

• The flipper of a whale and the arm of a human

• The tail of a monkey and the tail of a fish

What is a vestigial structure?

• A structure that is important for an organism's survival

• A structure in an organism that has lost all or most of its original function in the course of evolution

• A structure that is newly evolved

• A structure found only in plants

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Why is comparative anatomy considered evidence for evolution?

• Because it shows how modern technology has evolved

• Because it shows how different species are not related

• Because it demonstrates the similarities and differences in the anatomy of different species, suggesting a common ancestry

• Because it focuses only on the anatomy of humans

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