what is biodiversity
the variety and abundance of species present in an organism
what are carnivores
organisms that feed on other organisms for energy
what is a community
the total number of plants animals and microorganisms that live in a particular area
what is competition
the exists when a resource which several organisms require goes into short supply
what is a consumer
an organism that has to eat another organism plant or animal for energy
what is an ecosystem
this is made up of a community living in a particular habitat and the non living components with which the organisms interact with
what are food chains
they show the feeding relationships between different organisms.
what do the arrows of a food chain represent
the direction of energy flow
what is a good web
a good web is made up of interconnecting food chains within an ecosystem
what is a habitat
the place where an organism lives
what is a herbivore
an organisms that eats only plants
what is interspecific competition
the type of competition exists between members of different species for one or more of the resources they require
what is intraspecific competition
the type of competition between members of the species and is for all resources required. this is more intense then interspecific
what is a niche
the role that an organisms plays within a community
what are omnivores
an organism which eats both plants and animals
what is population
the number of organisms that belong to the same species and live in the same area of the environment
what are predictors
and organism that hunts and kills other organisms
what are prey
the organism that is hunted by predators
what are species
a group of organisms of one type that can interbreed to produce fertile offspring
ecosystem =
habitat+ community
what factors effect the size of a population
availability and competition of required resources and preditation
3 examples of an organisms niche
producer
decomposed
parasite
what does every food chain start with
the sun
when do animals compete for food
when there’s limited food or a shortage
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producing new cells62
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controll and communication48
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variation and inheritance32
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reproduction42
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transport system in plants37
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transport system in animals73
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transport across cell membranes37
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cell structure26
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DNA and the production of proteins20
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proteins19
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genetic engineering8
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respiration25
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skills2
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distribution of organisms20
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food production12
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evolution of species18
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energy in ecosystems12
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ecosystems25
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photosynthesis32
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nat5 exam37
