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Science - Ecosystems - April 18

Terms in this set (39)

species
A group of similar organisms that can breed and produce fertile offspring. (An example is the black-tailed prairie dogs that live in prairie dog towns on the Nebraska plains -- they are all members of one species.)
ecosystem
is a combination of biotic factors (or living organisms) and abiotic factors (nonliving elements), in a given place and how they interact. (***Another way to define ecosystem is "all of the living organisms that share an environment.")
Only those organisms that are able to get the resources they need will ______________.
Survive
A ___________________ is where a plant or animal lives in the ecosystem.
habitat
Niche
a special role an organism has in the ecosystem
Example: What would be an organism, habitat and niche in an Aquatic Ecosystem?
In an Aquatic Ecosystem an example of an ORGANISM would be a bass (fish), its HABITAT would be a pond, and its NICHE would be eating minnows (very tiny fish)
An organism gets food, water, shelter, and other things it needs to live, grow, and reproduce from its _______________.
environment
An organism interacts with both the living and nonliving parts of its ________________.
habitat
Abiotic factors
the nonliving parts of an organism's habitat
What are examples of abiotic factors in a prairie habitat?
Sunlight, Soil, Temperature, Oxygen and Water
population
all the members of one species living in a particular area
community
all the different populations that live together in an area make up a community
The smallest level of organization is a single _________________, which belongs to a population that includes members of its _______________.
organism, species
food web
a system of the connected food of chains that are found in an ecosystem
food chain
a path that shows how a set of organisms gets food and how energy is passed from one organism to the next
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