Ecology Study Guide

31 terms by volleygirly5 

Create a new folder

Advertisement Upgrade to remove ads

Mr. Mechienichs test on fri.

heterotrophs

organisms that cannot make their own food

tropic level

the position an organism occupies in a food chain, e.g. producer, secondary consumer, decomposer

primary producer

Organisms that produce energy available for other organisms to eat

primary consumer

An organism that eats producers

secondary consumer

An organism that eats primary consumers

tertiary consumer

An organism that eats secondary consumers

herbivore

plant eater

omnivore

eats plants and animals

carnivore

a flesh-eating animal

detrivore

organism that obtains its energy by feeding on dead organisms or wastes

10% rule

10% of the energy is transfered from one level to the next

biomass

the total mass of living matter in a given unit area

decomposer

eats and breaks down dead matter

symbiosis

the relation between two different species of organisms that are interdependent

Mutualism

both species benefit from the relationship

Commensalism

symbiotic relationship where one partner benefits & the other is unaffected

parasitism

one species benefits while the other is harmed

Competition

struggle between organisms to survive in a habitat with limited resources

Predation

Killing an eating another organism

Neutralism

both species remain unaffected

Ecosystem

a community of organisms and their non-living environment

Community

a group of interdependent organisms inhabiting the same region and interacting with each other

population

a group of the same organisms that live in a certian area

biosphere

a part of the earth where life exsists including land, water and air

nitrogen

the most common gas in the atmosphere, making up 78% of gases in dry air

nitrogen fixation

certain bacteria convert nitrogen gas into ammonia

denitrification

changing nitrates into nitrogen gas

carbon fixation

process of carbon dioxide into organic compounds

condensation

gas to a liquid

transpiration

loss of water from a plant thourgh its leaves

evaporation

liquid to a gas

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set