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Biology Savage
WCHS Savage Biology Chapter 3 & 4
| Word | Definition |
|---|---|
| Primary sucession | takes place on land where no tother organisms have ever lived |
| Secondary sucession | takes place after an existing community is severely disrupted in some way |
| Climax community | a stable, mature community that under goes little or no change |
| biotic | alive |
| abiotic | trees, rocks, temperature |
| artic zone | 60 degrees N and 60 degrees S; cold and dry |
| Temperate zone | between 30-60 degrees N and 30-60 degrees S; Warm to hot summers, cool to cold winters |
| Tropical zone | equator, 30 degrees N -30 degrees south; cold and dry |
| Photic zone | part of marine biomes, shallow enough to be penetrated by sunlight |
| Aphotic zone | deep water regions of marine biomes that recieve no sunlight |
| Climax communities | characterized by many differnt species of organisms |
| 10% law | organisms do not consume everthing in their tropic level so that portion is wasted |
| intertidal zone | part of shorline that is between tthe high and low tide lines |
| carrying capacity | number of organisms of one species that enviornment can support indefinitely |
| factors affecting population growth | availablitliy of food, disease, predators and lack of space |
| density dependent factors | disease, dompetition, predators, parasites and food - affects population |
| density independent factors | abiotic factors such as volcanic eruptions, temperature, storms - natural disasters that affect population growth |
| demography | study of human population size, density, distribution, movement and its birth/death rates. |
| age structure | proportions of the population that are in different age levels |
| exponential growth | J shaped curve, as a population get larger, it also grows at a faster rate, results in unchecked growth |
| life history pattern | an organisms reproductive pattern; short pattern example is mosquitos-they produce many in a short period. Long pattern is elephants - produce few over a long period of time. |
| biome | ecosystems that reach climac communities groped ito a broad category; large groups of ecosytems that share the same type of climax community |
| terrestrial biomes | biomes located on land |
| acquatic biomes | bodies of water-oceans, lakes, streams and ponds |
| marine biomes | ocean water biomes |
| permafrost | layer of permanently forzen ground in the tundra biome |
| niche | role of position a species has in its environment |
| habitat | place where an organism lives out its life |
| exotic species | species not native to an area |
| parts of biosphere | grasslands, tundra, tiaga |
| Range of tolerance | ability of an organism to adapt to its environment |
| extuary | coastal body of water where fresh water and salt water mix |
| Climate zones | Artic zone, Temperate zone, Tropical zone |
Created by:
dmoudy
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