Science Chapter 4: Interactions of Life

22 terms by cagno

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Population

is made up of all organisms of the same species that live in an area at the same time.

Community

are all the populations of all species living in an ecosystem

Food Chain

is a model of the feeding relationships amoung oraganisms

Examples of non-living features

an environment included water, temperature, soil and air

Habitat

the place in which an organism lives

Niche

an organism's role or position in its environment
A place where it fits in best

Producers

use the Sun to make energy-rich molecules

Consumers

Cannot make their own energy rich molecules.
Omnivores, herivores, carnivores and decomposers are all types of consumers

Herivores

are plant eaters

Carnivores

animals that eat other animals

Omnivores

eat plants and other animals

Predators

consumers that capture and eat other consumers

Prey

a consumer captured and eaten by other consumers predators. In the relationship between a raccoon and the fish in a stream, the raccoon is the predator. The presence of predators usually inceases the number of species that can live in an ecosytem.

Decomposers

Consume wasts and dead organisms. Decomposers help recycle once-living matter by breaking it down into simple compounds.

Symboiosis

Any close relationship between species is called symbiosis

Mutualism
Mutual

a symbiotic relationship in which both species benefit

Example of mutualism

an alga living in the tissue of a fungus

Commensalism

a symbiotic relationship in which one organsim benefits and the other is not affected

Example of Commensalism

a clown fish is protected by an anemone

Parasitism

a symboiotic relationship in which on organism benefits, but the other is harmed

Example of parasitism

a roundworm that lives in a puppy

Symbiotic relationship

close interaction between species in which one species lives in or on the other

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