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Ecology
N/A
26
Biology
7th Grade
04/23/2012

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Term
What is ecology?
Definition
the study of interactions between organisms and the environment
Term
what is a biotic factor?
Definition
living parts of the environment
Term
what are abiotic factors?
Definition
nonliving parts of the environment
Term
What is a producer?
Definition
an organism that creates its own food using energy from sunlight
Term
What are consumers?
Definition
organisms that eat other organisms to obtain energy
Term
What are the four types of consumers?
Definition
herbivore- eat plants
carnivore-eat animals
omnivore- both plants and animals
scavengers- eats dead animals
Term
what are decomposers?
Definition
organisms that obtain energy by breaking down the remains of dead organisms
Term
What do food chains represent?
Definition
they represent the flow of energy from one organism to the next
Term
WHat is the difference between a food web and a food chain?
Definition
a food web shows multiple connections and a food chain is just one path
Term
What is a habitat?
Definition
the environment in which an organism lives
Term
what is a niche?
Definition
the role that a species has in its environment
Term
What is a limiting factor?
Definition
any biotic or abiotic factor that becomes scare thus restricting population size
Term
what is carrying capacity?
Definition
the largest population size that an environment can support
Term
what is competition?
Definition
when 2 or more individuals or populations trying to use the same resource
Term
what does intraspecific mean?
Definition
within species
Term
what does interspecific mean?
Definition
between different species
Term
what is a predator?
Definition
an organism that feeds on another organism
Term
what is prey?
Definition
an organism that is fed on
Term
What is symbiosis?
Definition
it is a relationship in which there is a close and permanent association between organisms of different species
Term
what are the 3 types of symbiosis?
Definition
1. commensalism
2. mutalism
3. parasitism
Term
what is mutualism?
Definition
when both organisms benifit from the interaction
Term
what is commensalism?
Definition
when one organism benefits while the other is unaffected
Term
What is parasitism?
Definition
one organism benefits while the other is negatively impacted (parasite and host)
Term
What does the word alien mean when you say alien species?
Definition
it is an organism that makes a home in a new part of the world and often causes harm to the native environment and species
Term
What is conservation?
Definition
the wise use of and preservation of the Earth's natural resources (reduce, reuse, recycle)
Term
WHat does it mean to maintain biodiversity?
Definition
to protect food webs and ecosystems
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