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36 terms

Biology Ecology Part 1

9th grade Biology Honors Mr. Seally
STUDY
PLAY
abiotic
non-living
autotroph
an organism that makes its own food
biodiversity
the variety of species living within an ecosystem
biosphere
the part of earth where life exists
biotic
living
carnivore
organism that obtains energy by eating animals
carrying capacity
largest number of individuals of a population that a environment can support
community
a group of interdependent organisms inhabiting the same region and interacting with each other
competition
the struggle between organisms to survive in a habitat with limited resources
consumer
an organism that obtains energy by feeding on other organisms
decomposer
an organism that breaks down and obtains energy from dead organic matter
ecology
scientific study of interactions among organisms and between organisms and their environment
niche
organism's role, or job, in its habitat
ecological succession
gradual change in living communities that follows a disturbance
ecosystem
living and nonliving things in an environment, together with their interactions
energy pyramid
a diagram that shows the amount of energy that moves from one feeding level to another in a food web
environment
the area in which something exists or lives
food chain
a series of steps in which organisms transfer energy by eating and being eaten
food web
a diagram that shows the feeding relationships between organisms in an ecosystem
habitat
the place or set of environmental conditions in which a particular organism lives
herbivore
plant-eating animal
heterotroph
an organism that cannot make its own food
host
a living thing that provides a source of energy for a virus or an organism
limiting factors
environmental factors that restrict population growth
parasite
an animal or plant that lives in or on a host (another animal or plant)
population
group of individuals of the same species that live in the same area
predator
any animal that lives by preying on other animals
prey
animal hunted or caught for food
producer
an organism that makes its own food
primary consumer
consumer that feeds directly on producers
secondary consumer
consumer that eats primary consumers
symbiosis
relationship in which two species live closely together
commensalism
a symbiotic relationship in which one member is benefited and the second is neither harmed nor benefited
mutualism
symbiotic relationship in which both species benefit from the relationship
biomass
total amount of living tissue within a given trophic level
scavenger
an organism that feeds on dead or decaying material