Science Grade 10-Ecology

Key Terms to study: Definitions

Biotic: any living factors that influence on organism within an ecosystem ex.animals

Abiotic: non-living that shape an ecosystem ex.temperature

Community: population that live and the same time and location

Photosynthesis: the process by which a plant uses the energy from the sun to produce its own energy

Ecosystem: includes the communities and the abiotic factors

Biodiversity: number of genetically different types of organisms in an environment

Ecological Niche: the role of an organism in its environment, where it is in the food web and how it manages to survive

Food web: more complex feeding relationships than in a food chain

Primary Consumer: animals that eat primary producers

Secondary Consumer: eat primary consumers

Tertiary consumer: eat secondary consumer

bioamplification: an increase in the concentration of a substance as you move up on the food chain

Bioaccumulation: a process where an organism consumes a substance at a rate higher than they can break it down

Cellular Respiration: the chemical process that genet=rates most of the energy in the cell

Nitrogen cycle: continuous process by which nitrogen changes into various forms

Carbon cycle: the combined process including photosynthesis, decomposition, and respiration

Closed Population: Only natality and mortality affect population size.

Open Population: Come and go, all factors are acting on the population of each organism

Consumer: feeds on other organisms in a food chain

Decomposer: breaks down dead or decaying organisms

Producers: make their own food

Endangered: a species that is close to extinction

Extinct: a species that is not found anywhere

Extirpated: any species that no longer exists in one part of Canada

Herbivore: only eats plants

Omnivore: eats both plants and animals

Carnivore: eats only animals

Denitrification: the loss or removal of nitrogen or nitrogen compound

Nitrogen Fixation: when bacteria living in soil or on the roots of legumes convert N2 gas into ammonia

Immigration: movement of individuals into an area; causes growth

Emigration: movement of individual out of an area; causes decrease

Combustion: a chemical change

Carrying Capacity: number of organisms the environment can support

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Test coming up monday, study a lot!