Download Organism

Organism
Living thing
Habitat
An environment that provides the specific
things a specific organism needs to live, grow
and reproduce
The living parts of an environment
Examples: grass, trees, animals, worms,
bacteria,
The non living parts of an environment
Examples: Sun, Water, Soil, temperature,
oxygen,
A group of organisms that can mate and
produce offspring that can also mate and
reproduce
All of the members of one species living in a
particular area
Biotic Factor
Abiotic Factor
Species
Population
Community
All of the different populations that live
together
Ecosystem
The community of organisms that live in
particular area along with their non living
environment
The study of how organisms interact with each
other and with their environment
Ecology
Birth Rate
the amount of births per 1,000 individuals for a
given period of time
Death Rate
The amount of deaths per 1,000 individuals for
a given period of time
Immigration
Moving into a population
Emigration
Moving out of a population
Population Density
The number of individuals in an area of a
specific size
Population Density = Number of individuals ÷ unit area
Environmental factor that cause a population to
stop growing or decrease in size. Examples:
weather conditions, space, food and water
Limiting Factor
Carrying Capacity
The largest population an area can support
Natural Selection
The process by which organisms that are best
adapted to their environment are most likely to
survive and reproduce
The behaviors and physical characteristics that
allow organisms to live successfully in their
environments.
The role an organism plays in its habitat
Adaptation
Niche
Competition
The struggle between organisms to survive as
they attempt to use the same limited resources
Predation
An interaction in which one organisms kills
another organism for food
Predator
The organism that kills
Prey
The organism being killed
Symbiosis
An relationship between to organisms in which
two species live closely together and at least
one of them benefits.
Mutualism
A symbiotic relationship in which both species
benefit from the relationship
Commensalism
A symbiotic relationship in which one species
benefits and the other is not helped or harmed
Parasitism
A symbiotic relationship in which one species
benefits and the other is harmed
Parasite
The organism that benefits in a parasitic
symbiotic relationship
Host
The organism that is harmed in a parasitic
symbiotic relationship
Succession
The series of predictable changes that occur in
a community over time
Primary Succession
The series of changes that occur in an area
where no soil or organisms exist, nothing has
ever existed
Pioneer Species
The first organisms to populate an area never
populated before.
Secondary Succession
The series of changes that occur in an area
where the ecosystem has been disturbed, but
where soil and organisms exist
Example: after a natural disaster