An organism that actively hunts and kills its food.

An organism that is often hunted and killed as a food source

Relationship in which two species live close together

Relationship in which one organism lives inside or on another organism and harms/kills it.

Symbiotic relationship in which both species benefit from the arrangement

Symbiotic relationship in which one organism benefits and the other is neither helped or harmed

Shows the relative amount of energy at each trophic level of a food chain or food web.

The total amount of living tissue within a given trophic level.

Each step in a food chain or food web

Organism that makes its own food though photosynthesis.

Organism that relies on other organisms for its energy and food supply.

An organism that can only feed on the primary producer. First step above producer in a food chain.

An organism that feeds on the primary consumer. Second step up in a food chain.

An organism that feeds on the secondary consumer. Third step up in a food chain.

Proper term for an organism that makes its own food using photosynthesis.

Proper term for an organism that relies on other organisms for its energy and food supply.

An organism that makes its own energy using chemicals instead of sunlight.

Organism that feeds on dead and decaying materials to break them down into usable nutrients for producers.

A network of all the feeding interactions through which matter and energy move within an ecosystem.

Full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions.

when two organisms have the same needs in an ecosystem and they vie for space, food, shelter, reproductive rights.

Largest number of individuals of a particular species that a particular environment can support.

Factor that causes population growth to decrease.

Density Dependent Limiting Factors

A limiting factor that depends on a population’s density.

Density Independent Limiting Factors

A limiting factor that does not depend on a population’s density.

Law of Conservation of Energy

matter and energy cannot be created nor destroyed, only changed into or transferred to other objects.

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ecosystem

Term	Definition
Predator	An organism that actively hunts and kills its food.
Prey	An organism that is often hunted and killed as a food source
Symbiosis	Relationship in which two species live close together
Parasitism	Relationship in which one organism lives inside or on another organism and harms/kills it.
Mutualism	Symbiotic relationship in which both species benefit from the arrangement
Commensalism	Symbiotic relationship in which one organism benefits and the other is neither helped or harmed
Energy Pyramid	Shows the relative amount of energy at each trophic level of a food chain or food web.
Biomass	The total amount of living tissue within a given trophic level.
Trophic Level	Each step in a food chain or food web
Producer	Organism that makes its own food though photosynthesis.
Consumer	Organism that relies on other organisms for its energy and food supply.
Primary Consumer	An organism that can only feed on the primary producer. First step above producer in a food chain.
Secondary Consumer	An organism that feeds on the primary consumer. Second step up in a food chain.
Tertiary Consumer	An organism that feeds on the secondary consumer. Third step up in a food chain.
Autotroph	Proper term for an organism that makes its own food using photosynthesis.
Heterotroph	Proper term for an organism that relies on other organisms for its energy and food supply.
Chemoautotroph	An organism that makes its own energy using chemicals instead of sunlight.
Decomposer	Organism that feeds on dead and decaying materials to break them down into usable nutrients for producers.
Food Web	A network of all the feeding interactions through which matter and energy move within an ecosystem.
Niche	Full range of physical and biological conditions in which an organism lives and the way in which the organism uses those conditions.
Competition	when two organisms have the same needs in an ecosystem and they vie for space, food, shelter, reproductive rights.
Carrying Capacity	Largest number of individuals of a particular species that a particular environment can support.
Limiting Factors	Factor that causes population growth to decrease.
Density Dependent Limiting Factors	A limiting factor that depends on a population’s density.
Density Independent Limiting Factors	A limiting factor that does not depend on a population’s density.
Law of Conservation of Energy	matter and energy cannot be created nor destroyed, only changed into or transferred to other objects.

Created by: jacquelineb0688

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