A wide variety of questions about Natural Selection
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Appendage | Any structure, such as a leg or an antenna, that grows out of an animals body
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| Behavioral Adaptation | An inherited behavior that helps an organism survive
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| Dichotomous Key | A key for the identification of organisms based on a series of choices between alternative characters
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| Domestic Animals | Those species that have been brought under human control and that have adapted to life with humans
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| Evolution | A change in a species over time
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| External Stimulus | Anything outside the body of the organism that can cause a response in an organism
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| Extinction | When a species that no longer has any known living individuals.
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| Genes | A segment of DNA on a chromosome that codes for a specific trait
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| Geotropism | Response to earth's gravity, as the growing of roots downward in the ground
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| Homeostasis | A tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry, such as blood glucose, around a particular level
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| Hydrotropism | A plants growth response to water; plant grows towards the water
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| Internal Stimulus | A change from within an organism, such as hunger and thirst, that causes the organism to respond
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| Mutation | A change in a gene or chromosome
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| Natural Selection | Changes in genetic traits over many generations based on organism's ability to survive and reproduce
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| Phototropism | Plant growth in response to light
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| Physiology | The study of how the physical structures of an organism function
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| Response | A reaction to a stimulus
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| Selective Breeding | The man-made process of selecting a few organisms with desired traits to serve as parents of the next generation
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| Stimulus | A change in an organism's surroundings that causes the organism to react
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| Structural Adaptation | A physical feature that helps an organism survive in it's environment
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| Variation | Any difference between individuals of the same species
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| Xylem | Name the tissue that transports water
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