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33 Cards in this Set
- Front
- Back
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energy flow
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food chain
food pyramid food web |
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food chain
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Grass->rabbit->fox->saprophyte (decomposoer)
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Energy pyramid
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smallest amt of energy available is at the top
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Pyramid of mass
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since energy lost from one level to next each level can support a successively smaller biomass
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pyramid of number
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greater # of organism at the base
smallest # at the top |
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herbivores
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eat plant
heterotrophs |
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carnivores
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eat meat
heterotrophs |
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detrivores
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like scavengers and decomposers
live on dead organic matter |
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omnivore
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eat both plants and animals
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Food web
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expension of food chain
greater the number of pathway in a community the more stable it is |
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4 kinds of bacteria in nitrogen cycle
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decay
nitrifying NH3->NO2->NO3 denitrifying NH3 -> N2 nitrogen fixing N2->NO3 |
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Nitrogen cycle
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N2(free nitrogen in atmosphere) ->NO3 nitrite -> plant protein synthesis ->animal protein synthesis->NH3 (ammonia) from dead remain ->NO2 nitrites and to N2 ->NO3
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nitrogen fixing bacteria
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on the roots of legume
convert N2 (free nitrogen in the air) to Nitrates NO3- |
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Denitrifying bacteria
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ammonia NH4 to N2
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Nitrifying bacteria
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chemosynthesis
from NH3->NO2- nitrites -> Nitrates NO3- |
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carbon cycle
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CO2 in the air (thru photosysnsis)-> organic compund in the plants(glucose)->thru eat animal -> decay or respiration animal produce CO2
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levels of biological organization
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organism
population community ecosystem biosphere |
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level of organism
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atom
molecule cells tissue organ organ system |
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population
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group of organisms of same species living together in a given location
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community
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population of different plants and animals interacting in given location
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niche
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defines functional role of an organism in its ecosystem.
describe what organism eats and where and how it obtains its food what climate factor are optimal. |
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ecosystem
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interaction between living biotic community and nonliving environment (abotic)
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two species can't occury same niche because they compete for same resourse as a result??
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1. one survie other doesnt
2. one surve in one environment and other on other enviornment 3. evolve direget direction |
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Mutualism
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benefit both host and organmism
ex intestinal bac and human thickbirds and rhinocors |
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commensalism
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host not affected
organism 2 benefit |
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parasitism
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host - negative
organism 2 benefit ex virus and host cell |
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saporophyte
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fungi or protist
decompose dead organism and absorb nutrient |
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Tundra
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treeless, frozen pain found btw taiga lands and nothern ice sheets
short summer and very short growing session |
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Taiga
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long cold winter, receive less rainfall than temp forest
northern part of canada and russia |
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tropical rain forst
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jungle
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deciduous forst
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cold winter, warm summer and moderate rain fall
tree shed leaves during winter |
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coniferous forest
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cold and dry
N part of US |
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Grassland biome
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low rainfall but more than desert
provide no shelter for herbivorus mammals |
