Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

bio test(leah)

QuestionAnswer
Intra-specific competition -Individuals compete with others of their own species
Inter-specific competition -Individuals compete with others of a different species that require similar resources
Competitive Exclusion Principle Two species that use resources exactly the same way cannot coexist. One of the two competitors will always have an ever so slight advantage over the other that leads to a decrease in the inferior competitor population.
Niche a species’ role in its community, and can be thought of as what an organism does for a living.
Example of niche A barnacle is a crustacean that attaches to a surface, like rocks along the shore of an ocean. The barnacle’s niche includes where it attaches to rocks, the amount of seawater and air it is exposed to, and the food it consumes.
Ecology The study of interactions between organisms and their environment.
Symbiotic Relationships Close, long-term ecological relationships between two different species in which at least one species benefits.
Commensalism A symbiotic relationship in which one organism benefits and the other is unaffected.
Mutualism A symbiotic relationship in which both organisms benefit.
Competition Occurs when organisms use the same limited resource, so there isn’t enough for all of them.
Ecosystem stability The ability of an ecosystem to maintain relatively balanced, consistent conditions over time despite disturbances.
Trophic levels The feeding position an organism occupies in a food chain (e.g., producer, primary consumer, secondary consumer).
Primary consumer An organism that eats producers (mostly herbivores).
Secondary consumer An organism that eats primary consumers.
Tertiary consumer An organism that eats secondary consumers.
Decomposer An organism that breaks down dead organisms and waste, returning nutrients to the ecosystem.
Biodiversity The variety of different species living within an ecosystem or region.
Example of mutalism bees pollinating flowers: the bee gets nectar, the flower gets pollinated.
Example of commensalism barnacles attached to a whale, hitching a ride and filter-feeding without affecting the whale.
Example of parasitism a tick feeding on a dog’s blood.
What is the 10% rule? Only about 10% of the energy available at one trophic level is transferred to (available to) the next trophic level; the remaining ~90% is lost as heat or used for the organism’s own life processes.
Species A group of organisms that can interbreed and produce fertile offspring.
Population All the members of the same species living in the same area at the same time.
Community All the different populations (species) living and interacting in the same area.
Abiotic factors The nonliving parts of an environment (water, temperature, sunlight, soil, air, etc.).
Biotic factors The living parts of an environment (organisms).
Ecosystem A community of organisms together with the abiotic (nonliving) environment they interact with.
Density dependent Density-dependent means that the effect of an environmental factor on a population's growth rate changes depending on how dense the population is. A process where birth and death rates change because of the number of individuals in a given area.
Density independent any force or event in ecology that affects the size of a population and its death rate regardless of how close together or numerous the individuals are in a given area
Carrying capacity Carrying capacity is the maximum number of individuals of a specific species that an environment can sustainably support over a long period of time
Created by: allyce
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards