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24 terms

ECOLOGY VOCABULARY PART 1

STUDY
PLAY
Carrying Capacity
largest number of individuals of a population that a environment can support
Density-Dependent
A factor that limits a population more as population density increases. For example: A disease that spreads more easily among organisms in a dense population than in a less dense population
Population
The amount of organisms of the same species living in an area
Zero Population Growth
when birth rate equals death rate
Mutualism
symbiotic relationship in which both species benefit
Autotroph
an organism that creates its own food and energy (not producer)
Omnivore
an organism that eats both plants and animals
Biomass
the total mass of living matter in an organism
Carbon Cycle
the organic circulation of carbon from the atmosphere into organisms and back again
Cellular Respiration
process that releases energy by breaking down glucose and other food molecules in the presence of oxygen creates carbon dioxide and is made in cells(Plants and Animals)

sugar + oxygen -> carbon dioxide + water
Organism
any living thing
Death Rate
the ratio of deaths in an area to the population of that area
Equilibrium
When the population has reached its carrying capacity
Competition
the struggle between organisms to survive in a habitat with limited resources
Immigration
movement of individuals into an area occupied by an existing population(INTO)
Community
a group of interdependent organisms inhabiting the same region and interacting with each other
Commensalism
the relation between two different kinds of organisms when one receives benefits from the other without damaging it
Producer
an organism that creates its own food and energy (not autotroph)
Carnivore
organism that obtains energy by eating other consumers
Food Chain
Simple Model to show how matter and energy move through an ecosystem through a specific path
Abiotic
non-living factor
Nitrogen Cycle
the circulation and reutilization of nitrogen in both inorganic and organic places.
Photosynthesis
process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches

carbon dioxide + water + sunlight -> oxygen + sugar
Prey
hunted organism or caught for food