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Natural Selection

A wide variety of questions about Natural Selection

QuestionAnswer
Appendage Any structure, such as a leg or an antenna, that grows out of an animals body
Behavioral Adaptation An inherited behavior that helps an organism survive
Dichotomous Key A key for the identification of organisms based on a series of choices between alternative characters
Domestic Animals Those species that have been brought under human control and that have adapted to life with humans
Evolution A change in a species over time
External Stimulus Anything outside the body of the organism that can cause a response in an organism
Extinction When a species that no longer has any known living individuals.
Genes A segment of DNA on a chromosome that codes for a specific trait
Geotropism Response to earth's gravity, as the growing of roots downward in the ground
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
Hydrotropism A plants growth response to water; plant grows towards the water
Internal Stimulus A change from within an organism, such as hunger and thirst, that causes the organism to respond
Mutation A change in a gene or chromosome
Natural Selection Changes in genetic traits over many generations based on organism's ability to survive and reproduce
Phototropism Plant growth in response to light
Physiology The study of how the physical structures of an organism function
Response A reaction to a stimulus
Selective Breeding The man-made process of selecting a few organisms with desired traits to serve as parents of the next generation
Stimulus A change in an organism's surroundings that causes the organism to react
Structural Adaptation A physical feature that helps an organism survive in it's environment
Variation Any difference between individuals of the same species
Xylem Name the tissue that transports water
Created by: RRIceboy883