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Science Exam Review

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
What causes bird beaks to vary?   Adaptations  
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What is a dichotomous key?   A tool used to figure out the characteristics of an orgainsm  
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How do we use dichotomous keys?   One step leads to another, and once you have reached a certain point, it will lead you to an answer  
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What is an adaptation?   How animals adapt to their environment to survive  
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Why have insects had to adapt their mouths?   To get food from different organisms  
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What type of adaptation allows reptiles to change the color of their skin?   Camouflage  
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How do plants attract pollinator insects?   Bright color variation  
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What is the purpose of plants having bulb root systems?   To keep the plant from blowing away  
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What is selective breeding?   When humans genetically modify an animal to meet specific standards  
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How have humans genetically modified the traits of dogs?   By selecting two genetically qualified parents  
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What is natural selection?   The selection in which adaptations help an animal in its environment  
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How do gills in fish help their survival?   Gills help fish with survival because without gills, fish wouldnt be able to breathe underwater and die  
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What types of adaptations help birds fly?   Hollow bones  
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Why do humans grow a second set of teeth?   Because, eventually we grow out of the first  
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How do sharks and dolphins differ?   Sharks have gills, therefore letting them breathe underwater dolphins on the other hand, have lungs that can hold a large amount of air in them, so they have to come to the surface for air  
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What types are only seen in dissections?   Hollow bones, and digestive systems  
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What is the purpose of xylem?   To get water and nutrients throughout a plant  
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What type of seed dispersal allows the seed to stick to an animal?   Pollenation  
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Which type of tropism is a stimulus for roots to grow down?   Geotropism  
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Which type of tropism is a reaction to sunlight?   Phototropism  
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