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Combo with "Unit 8: Interactions Among Living Things" and 1 other
7th grade gifted/accelerated science Georgia standards
Terms in this set (65)
a living thing
the specific environment that provides the things an organism needs to live, grow, and reproduce
a living part of an organism's habitat
abiotic factor definition
a nonliving part of an organism's habitat
the process in which some organisms use water along with sunlight and carbon dioxide to make their own food
a group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce
all the members of one species in a particular area
all the different populations that live together in an area
the community of organisms that live in a particular area, along with their nonliving surroundings
the study of how organisms interact with their environment
the role of an organism in its habitat, or how it makes its living
the struggle between organisms to survive as they attempt to use the same limited resource
an interaction in which one organism kills another for food
the organism that does the killing in a predation interaction
an organism that is killed and eaten by another organism
a close relationship between organisms of two species in which both organisms benefit
a relationship between two species in which one species benefits and the other is not helped nor harmed
a relationship in which one organism lives on or in a host and harms it
the organism that benefits by living on or in a host in a parasitism interaction
the organism that a parasite or virus lives in or on
an organism that can make its own food
an organism that obtains energy by feeding on other organisms
a consumer that eats only plants
a consumer that eats only animals
a consumer that eats both plants and animals
a carnivore that feeds on the bodies of dead organisms
an organism that breaks down chemicals from wastes and dead organisms, and returns important materials to the soil and water
a series of events in which one organism eats another and obtains energy
the pattern of overlapping food chains in an ecosystem
a diagram that shows the amount of energy that moves from one feeding level to another in a food web
How does a habitat affect the organisms within it?
an organism obtains food, water, shelter, and other things it needs to live, grow, and reproduce from its environment
List some examples of abiotic factors.
oxygen, water, sunlight, temperature, soil
What are the levels of organization?
population -> communities -> ecosystems
What do the levels of organization consist of?
populations: many of the same species
communities: many groups of populations
ecosystems: all the biotic and abiotic organisms
What are the four methods used to find population size?
direct observation, indirect observation, sampling, mark-and-recapture studies
What are some limiting abiotic factors?
food, water, space, weather conditions
Give an example of mutualism.
relationship between saguaros and long-eared bats
Give an example of commensalism.
red-tailed hawks' interaction with the saguaro
Give an example of parasitism.
tick on a dog
What are the levels of a food chain?
producer -> first-level consumer-> second-level consumer -> third-level consumer
How are food chains related to food webs?
they both show the movement of energy through an ecosystem
How much energy moves up the feeding level?
What converts radiant energy to chemical bond energy?
What is the source of energy for almost all food chains?
What determines an areas climax community?
natural disaster, fire, humans
Typical succession in NYS
the natural decay of material such as leaves in the soil's top layer.
examples of limiting factors
temp, amount of light, water, rocks, soil
a portion of the earth where life exists (all the living things)
organisms that can make their own food through photosynthesis
organisms that can not synthesize their own food and rely on other organisms
heterotrophic organisms which live on dead matter (decomposers)
a series of organisms interrelated in their feeding habits
the amt of biomass at any level is lower than the biomass at the level below it
biomass pyramid example
plants-primary consumers-secondary consumers-higher order consumers
Carbon- hydrogen cycle
involves process of respiration and photosynthesis
the replacements of one community by another until a stable stage is reached
the 1st plants to populate a given location (lichen)
a self- perpetuating community which populations do not change
typical sucession in NY
lichen, grass, shrubs, coniferous forest, deciduous forest.
What is the chemical form nitrogen must be in to be absorbed by plants
animals get nitrogen from
what cycles nitrogen in the environment