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Biology quiz 1
Topic 1, 6, 2
Term | Definition |
---|---|
Biological Diversity | The different kinds of life on earth |
Variations | Differences among organisms |
Species | look similar, can mate and produce fertile offspring |
adaptations | variations that help an organism to survive |
structural adaptation | a feature on or in the organisms body that helps it better survive |
behavioural adaptation | the way an organisms acts that helps it better survive |
natural selection | "survival of the fittest" those best adapted to the environment will pass on their genes |
diversity index | measure of how diverse an area is |
camouflage | blending in with your surroundings to remain hidden from predators |
mimicry | impersonating some other organism that has a helpful adaptation to give yourself the same protection |
hibernation | going into a metabolic "sleep" to slow down when food is scarce |
migration | moving great distances to warmer climates or more food |
speciation | the creation of two distinct species from a common ancestor |
artificial selection | humans choosing traits they find desirable and breeding those things together |
evolution | a long term effect of many generations of natural selection |
domestic | a tame animal in close relationship with humans |
niche | the role an organism plays in its environment |
producer | a photosynthetic organism that collects energy from the sun |
herbivore | eats only producers |
omnivore | eats other consumers or producers |
carnivore | eats only other consumers |
broad niche | generalists. Can survive in a wide range of niches |
narrow niche | specialist. Can only survive in small niches |
symbiosis | two organisms in close relationship to each other |
mutulism | a symbiotic relationship where both organisms benefit |
commensalism | a symbiotic relationship where one organism benefits and the other is neither helped nor harmed |
parasitism | a symbiotic relationship where one organism benefits and the other is harmed |