31 terms

Ecology

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Terms in this set (...)

Abiotic Factor
non living items in an ecosystem. ie. humidity, temperature, water, air, wind, rocks, clouds
Biosphere
the layer of the earth where life occurs
Biotic Factor
living organisms in an ecosystem. ie animals, plants, bacteria, fungus,
Community
a group of different populations in an ecosystem
Ecology
study of interactions of organisms in their environment
Ecosystem
All abiotic and biotic factors within an area
Experimentation
design and carry out of a testable hypothesis
Modeling
diagram or 3D artifact to depict something to scale or not to scale.
Observation
using one or more senses to record data
Population
multiples of the same species
Individual
one of a species
Autotroph
An organism that makes its own food
Carnivore
A consumer that eats only animals.
Chemosynthesis
Process by which some organisms, such as certain bacteria, use chemical energy to produce carbohydrates
Primary Consumer
An organism that eats producers
Secondary Consumer
Carnivore that eats herbivores.
Decomposer
organism that breaks down and obtains energy from dead organic matter
Detritivores
feed on plant and animal remains and other dead matter
Ecological Pyramids
illustration of the relative amounts of energy or matter contained within each trophic level in a given food chain or food web
Food Chain
series of steps in an ecosystem in which organisms transfer energy by eating and being eaten
Food Web
Many food chains overlapping each other to show the feeding relationships with many arrows showing the flow of energy
Herbivores
Consumers that eat only plants
Heterotroph
organism that obtains energy from the foods it consumes; also called a consumer
Omnivore
A consumer that eats both plants and animals
Photosynthesis
Plants use the sun's energy to convert water and carbon dioxide into glucose (sugar) and oxygen
Phytoplankton
photosynthetic algae found near the surface of the ocean
Primary Producer
an autotroph who uses light energy to make its own food in form of carbohydrates, lipids, and proteins
Trophic Level
Each step in a food chain or food web
Biomass Pyramid
Diagram representing the biomass in each trophic level of an ecosystem
Numbers Pyramid
shows how many organisms are needed at each trophic level
Energy Pyramid
A diagram that shows the amount of energy that moves from one feeding level to another in a food web