A group of individuals belonging to the same species and live in the same area at the same time.
What is a Population?
100
This is shown on a food web by an arrow and flows in one direction.
What is Energy?
100
The specific location and function (or job) a species has in an ecosystem.
What is a niche?
100
The definition of an autotroph.
What is an organism that converts inorganic compounds to food (makes its own food)?
100
The first species in an area.
What is a pioneer species?
200
The difference between a Community and an Ecosystem.
What is the addition of physical and non-living elements of an environment (abiotic factors)?
200
The amount of energy at the second trophic level if the original energy is 2570 calories.
What is 257 calories?
200
An example would be humans hunting and eating game.
What is predation?
200
The process(es) that producers use to make their own food.
What are photosynthesis and chemosynthesis?
200
A species that has an extremely large impact on an ecosystem- that if removed, the ecosystem would change dramatically.
What is a keystone species?
300
The most inclusive level of organization.
What is the biosphere?
300
This is removed from organisms when measuring biomass.
What is water (abiotic matter)?
300
An example would be a hermit crab that lives in a sea anemone. The hermit crab gains protection from the sea anemone, and the anemone is able to eat the left over food the crab brings in.
What is mutualism?
300
An example would be a panda bear.
What is a herbivore/primary consumer?
300
The definition of secondary succession.
What is the replacement of species to an area that has previously had growth?
400
An example of this level would be the relationships between deer and the plant species it eats in its habitat.
What is a Community?
400
One is a linear representation of energy flow through an ecosystem and one is more complex and shows more species in each trophic level.
What is the difference between food chains and food webs?
400
When species live closely together.
What is a symbiotic relationship (symbiosis)?
400
The reason why decomposers are so important to an ecosystem.
What is the break down of dead organic material and replenishing of nutrients in the soil to be used again by producers?
400
The organism that aids in denitrification and nitrogen fixation.
What are bacteria?
500
The order of the levels of organization in Ecology.
What is Individual, Population, Community, Ecosystem, Biome, Biosphere?
500
The direction in which the arrows in a food web/food chain point.
What is the direction of energy flow (towards the consumer)?
500
The symbols +/0.
What is commensalism?
500
The organisms that make up the top three/four trophic levels in an ecosystem.
What are consumers?
500
The competitive exclusion principle.
What is the principle that states that no two species can occupy the same niche in an ecosystem?