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Biology Flashcards

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9071879444BiosphereThe largest level of ecological organization0
9071879445Abiotic factorNonliving factor inside an ecosystem1
9071879446PopulationGroups of organisms of the same species that live in the same place at the same time2
9071879447EcosystemA collection of different communities as well as abiotic factors3
9071879448The sunUltimate energy source for all living organisms4
9071879449Autotroph (producer)Organism that is able to make its own food5
9071879450DecomposerBreaks down dead organic matter6
907187945110%Amount of energy transferred from one trophic level to the next7
9071879452MutualismTwo species live together...both benefit8
9071879453Predator-prey relationshipOne species hunts and kills another species9
9071879454OmnivoreEats both plants and animals10
9071879455Exponential growth11
9071879456Logistic growth12
9071879457Pioneer speciesThe first organisms to grow successfully in a newly formed rock formation13
9071879458Primary succession14
9071879459Secondary succession15
9071879460Climax communityForm when succession slows down and a stable community is established. Little to no species change16
9071879461CarnivoreEats only meat17
9071879462HerbivoreEats only plants18
9071879463Heterotroph (consumer)Organism that must eat other organisms for food/energy19
9071879464ParasitismTwo organisms live together...one is benefited while the other is harmed20
9071879465CommensalismTwo organisms live together...one is benefited while the other is unaffected21
9071879466Soil bacteriaResponsible for "fixing nitrogen" and recycling it back into the atmosphere22
9071879467Carrying capacityThe maximum number of organisms that an environment can support23
9071879468Ecological successionThe regular progression of species replacement in an environment24
9071879469Limiting factorsComponents of an environment that can reduce a population size25
9071879470CommunityA collection of all of the various populations occupying a single area26
9071879471NitrogenMakes up 80% of the atmosphere27
9071879472NitrificationProcess of converting atmospheric nitrogen (N2) into nitrates28
9071879473DenitrificationProcess of converting nitrates into atmospheric nitrogen (N2)29
9071879474DecomposerBreaks down dead organic matter30
9071879475ProducerOrganisms that make their own food (autotrophs).31
9071879476Primary ConsumerOrganisms that eat autotrophs. They are herbivores.32
9071879477Secondary ConsumerLargely feed on primary consumers. Includes omnivores and carnivores.33
9071879478Tertiary ConsumerLargely feeds on carnivores or secondary consumers.34
9071879479Apex PredatorEach food chain end with a top predator, an animal with no natural enemies.35
9071879480biomea very large ecological areas on the earth's surface, with animals and plants adapting to their environment36
9071879481ecosystemeverything that exists in a particular environment; living and non-living (abiotic factors)37
9071879482pyramid of energya graphical model of energy flow in a community shaped like pyramids because of the loss of energy between different levels38
9071879483communitygroups of different species interacting in an area39
9071879484speciesa group of animals or plants that are similar and can reproduce (have babies)40
9071879485food chaina series of organisms each dependent on the next as a source of food41
9071879486trophic levelorganisms are on the same level of the food chain; have the same function (both mice and ants eat grass-primary consumer) Organisms in a food web can occupy more than one trophic level organisms should be positioned at their highest trophic level42
9071879487biotic factorsAnything in an ecosystem that originates from living things interactions between organisms43
9071879488populationa group of organisms of the same species that live in a place44
9071879489food weba series of organisms related by predator-prey and consumer-resource interactions 1. Organisms can have more than one food source 2. Organisms can have more than one predator45
9071879490abiotic factorsNon-living chemical and physical parts of an environment Environmental conditions some examples include Light (sun) temperature, salinity, rainfall, wind velocity, soil pH,46
9071879491nichethe way in which an organism fits into an ecological community or ecosystem47
9071879492nutrient cyclewhen organic and inorganic material change back to living matter48
9071879493producersuse photosynthesis (using light energy) or chemosynthesis (using chemical energy) to make organic compounds49
9071879494consumerorganisms of a food chain that get energy by eating other organisms50
9071879495inorganic nutrientsnutrients that do not have carbon (water and minerals)51
9071879496autotrophsynthesise organic molecules from simple inorganic substances Make their own food from non-living substances52
9071879497saprotrophsan organism that feeds on decaying organic matter an organism that lives on or in non-living organic matter, secreting digestive enzymes into it and absorbing the products of digestion.53
9071879498detritivoresan animal which feeds on dead organic material54
9071879499heterotrophAn organism that cannot make its own food and instead gets its food and energy by taking in organic substances, usually plant or animal matter They eat other living things Can be classified by their feeding patterns55
9071879500trophic efficiencypercentage (%) of energy transferred from one trophic level to the next56
9071879501ten percent rulean average of 10% of energy is passed on to the next trophic level57
9071879502detritusthe pieces that are left (i.e. when a living organism dies)58
9071879503habitatthe environment where a species normally lives, or the location of a living organism59
9071879504ecologythe study of the relationship between living organisms, or between living organisms and their environment60
9071879505symbiosiswhen two organisms interact and are together61
9071879506mutualimssymbiosis when both organisms benefit62
9071879507commensalismsymbiosis when one organism benefits and the other doesn't either benefit nor harm63
9071879508parasitisma parasite lives within or on something else64
9071879509intraspecificwithin species65
9071879510interspecificbetween species66
9071879511primary consumersfeed on producers and hence occupy the second trophic level67
9071879512secondary consumereat primary consumer68
9071879513trietary consumereat secondary consumer69
9071879514photoautotrophicthey use sunlight as a source of energy This makes light the initial source of energy for almost all communities70
9071879515Pyramid of Biomassshows the total mass of organisms at each stage of a food chain71
9071879516A pyramid of numbersshows the relative number of organisms at each stage of a food chain Shaped like pyramid because less organisms higher the trophic level72
9071879517swampAn area of low-lying, uncultivated ground where water collects; a bog or marsh.73
9071879518vaporizeConvert or be converted into vapour.74

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