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62 Cards in this Set

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  • Back
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most specific level
last level
whole number of organisms occupying one area
many organisms
An interacting population of verious individuals
the study of relationships between organisms and the living and nonliving factors in the environment
geographic/climatic region and the large community that lives there
the portion of earth that supports life
a non lving thing
example: water, sun
a living thing
example: humans, plants, animals
a plant eating organism
a meat eating organism
a plant & meat eating prganism
an organism that breaks down dead organisms
moves energy through web, predator consumes prey
Organism that SEEKS out dead or dedcaying organisms for food
food web
a relatinship among organisms i which eah is linked to another that eats, absorbs, or decomposes
order in which things are eaten
one species benefits and the other neither benefits or is harmed
both species mutually benefits two species
the parasite benefits at the expense of the host, a good parasite never kills host because than it would have to find another host
Name the three symbiotic relationships
Commensalism, mutalism, parasitism
scientific term referring to any organisms that makes its own food
the scientific term for any organisms that feeds on other organisms
general term meaning a gradual change in community over time
True or false -> no relationship exists between lving things and the nonliving environment
True or false -> Minerals are abiotic factors i the environment
True or false -> Typical biotic factors in a pond include plants, bacteria, and fish
true or false -> Organisms do not interact with their environment
True or false -> Heterotrophs re a;sp known as producers
grass --> rabbits --> hawks is an examaple of ...
A food chain
a gradueal change in the structure of a community over time
chemical substances that an organism requires to live
ONly 10% of heat of the nergy stored in an organism can be be passed to the next tophic level - of the remaianing energy some is used for its life procces and the rest is WHAT?
lost as heat
the toal portion of the earth that supports life is called ....
interaction where an organism captures and feeds on another organism
larger participant ina symbiont relationship
what is successulf parasite?
one that harms the host anad doesn't kill it
what are the two conditions for a self-sustaining ecosystem
needs a relative source of energu and inorgainc & organis nutrients being recycled
what is the difference between chemical energy and free energy
Chemical energy stored in the orgainc molecules which organisms are made & free energy is theportion of energy during a chemical reaction that us able to do work
places where specific organisms live
What si the sourceo f energy for a autotroph, heterotroph?
autotroph-sun or inorganic chemicals, heterotoph-chemical energy in food
what is the biggest difference between nonliving and living organisms
a nonliving thing does'nt rekease energy when converting chemical energy
measure of the degree of disorganization of a system
what happens when an organism adapts to a new enviro
it gets excluded from another
trophic Structure
of a community is a description of feeding or nutritional relationships among organisms in the community
true or false --> Producers ssuch as plants make up the trophic level that supports the sustem
energy Pyramid
a represntation of the tophic structure of an ecosystem i nwhich a decrease in the area at each level of the diagram illustrates the loss of energy available to those organisms living in that trophic levels
10 percent rule
each level recieves one tenth of the energy level below it
wjen two species consume the same resource ...
they compete with each other
particular combinations of resources that a species is adapted to exploit
Organisms absorb and release WHAT?
nitrogen, oxygen, and carbon
Carbon Cycle
carbon fiaxtion and cell repiration move through the biosphere
what are the 3 elements in the carbon cycle?
carbon, oxygen, and hydrogen
water cycle
water returns through transpiration, cell respiration , and evaporation
Nitrogen Cycle
prokaryotes convert nitrogen in the atmosphere to amonia through nitrogen fixation
Boundaries of biomes are usually indestinct because...
changes in climate form place to place are gradual
what determines where a biome is
climate, temperature, precipitation,altitdue, latitdue
Terrestrial biome
living onor growing from land or relating to terrestiral organisms
Aquatic bioiime
growing or living in water
What is a limiting factor ina aquatic biome?
the amountof light it gets
Primary succession
begins on bare rock, glacier deposits, or ina lake bed
Secondary succession
takes place on a disturbed site where soil is present
Climax Community
when a web of interaction is so interaction is so intricate no other species can fit unless another disappears