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Natural selection

natural selection, symbiosis, evolution

QuestionAnswer
Define a population. All the organisms of one species living in one area.
Define a species. Organisms that can reproduce and whose babies can reproduce.
Define a community. The different species living in one area.
Define carrying capacity. The number of organisms an area can support.
What can members of the same species do? Have babies who can reproduce.
Natural selection states that populations contain what? Variations or differences in traits
What does natural selection say about variations? Some are helpful and some are harmful
Helpful variations allow organisms to do what? Have more babies that survive
What does natural selection say about the number of offspring produced? More are produced than survive to adult
What does natural selection say about populations over time? Populations change over time
What is the reason populations change over time? Individuals with beneficial traits survive.
What term describes interactions between species? symbiosis
In mutualism, one organism benefits. What happens to the other? Mutualism, both organisms benefit
In commensalism, one organism benefits, what happens to the other? Commensalism, one organism benefits, one is not affected
In parasitism, one organism benefits. What happens to the other? Parasitism, one benefits, one is harmed
In which type of relationship do both organisms benefit? Mutualism
In which type of relationship is one organism harmed? Parasitism
In which type of relationship is one organism not affected? commensalism
Define evolution. Populations will change over time.
Define vestigial structures Structures that seem to have no function.
Define homologous structures. similar structures in different organisnsms
List 3 limiting factors. Food, shelter, number of mates, water, number of predators
Created by: lb goodlock