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Ch. 7 Science
Ch. 7 review questions for section 1-5
Question | Answer |
---|---|
What are some adaptations that Darwin noticed on his trip? | Same species with different beak structures help in obtaining food |
What are some examples of Scientific theory in this chapter? | diversity of organisms, the remains of ancient organisms, and darwin's theory of evolution |
Who was Darwin and what did he write that proposed a groundbreaking theory? | Darwin was a british naturalist, who developed the theory of evolution by natural selection |
What traits can be acted upon by natural selection? | Inherited traits |
What type of evidence do scientists use to determine evolutionary relationships? | They use shared derived characteristics on a branching tree diagram |
How do fossils form? | Fossils form when dead animals get buried and the sediment around them and the hard parts of their bodies turn to stone |
How can comparative anatomy be used to provide evidence of evolution? | It shows a similarity in body structure that are inherited from an early ancestor. |
What are some of the main causes of extinction? | Extinction is caused by change in a species' environment. |
What are the main ways that new species form? | When a group of individuals are isolated from the rest of its species long enough to evolve different traits |
What are the 3 domains used to classify animals? How do they determine which organisms go in which? | Bacteria, Archaea, Eukarya. They can be determined by cell type, ability to make food, and the number of cells they have in their bodies. |
What is the difference between genus and species? | A genus is a group of similar, closely related species, but species is physically similar and can produce fertile offspring. |
What is the highest level of organization for living organisms? Which level has the most closely related organisms? | Domain= highest level. Species= most closely related organisms. |
Mnemonic device for the 8 levels of classification | Do- Domain Kids- Kingdom Prefer- Phylum Candy- Class Over- Order Fried- Family Green- Genus Spinach- Species |
Branching tree diagram | a diagram that shows probable evolutionary relationships among organisms |
How does a branching tree diagram group organisms? | By the shared derived characteristics |