Organisms that capture energy and use it to make organic molecules.(Autotrophs manufacture their own food. Ex: plants, some protists and some bacteria.

The proccess where autotrophic bacteria uses energy stored in inorganic molecules to produce carbohydrates.

Gross Primary Productivity

The rate at which producers in an ecosystem capture the energy of sunlight by producing organic compounds.

Organic material that has been produced in an ecosystem.

Net Primary Productivity

The rate at which biomass accumulates.

Organisms that obtain energy by consuming organic molecules made by other organisms. (Heterotrophs cannot manufacture their own food. They get energy by eating other organisms or organic wastes. Ex: all animals and fungi, and most protists and bacteria.)

Organisms that eat other consumers.

Organisms that eat both producers and consumers.

Organisms that feed on/ eat the "garbage" or waste of an ecosystem.

Organisms that cause decay by breaking down complex molecules into simpler molecules.

Indicates an organism's posistion in a sequence of energy transfers.

A single pathway of feeding relationships among organisms in an ecosystem that results in energy transfer.

Interrelated food chains in an ecosystem.

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18.3 Vocabulary

Terms for chapter eighteen section three: Modern Biology

Question	Answer
Producers	Organisms that capture energy and use it to make organic molecules.(Autotrophs manufacture their own food. Ex: plants, some protists and some bacteria.
Chemosynthesis	The proccess where autotrophic bacteria uses energy stored in inorganic molecules to produce carbohydrates.
Gross Primary Productivity	The rate at which producers in an ecosystem capture the energy of sunlight by producing organic compounds.
Biomass	Organic material that has been produced in an ecosystem.
Net Primary Productivity	The rate at which biomass accumulates.
Consumers	Organisms that obtain energy by consuming organic molecules made by other organisms. (Heterotrophs cannot manufacture their own food. They get energy by eating other organisms or organic wastes. Ex: all animals and fungi, and most protists and bacteria.)
Herbivores	Organisms that eat producers.
Carnivores	Organisms that eat other consumers.
Omnivores	Organisms that eat both producers and consumers.
Detritivores	Organisms that feed on/ eat the "garbage" or waste of an ecosystem.
Decomposers	Organisms that cause decay by breaking down complex molecules into simpler molecules.
Trophic Level	Indicates an organism's posistion in a sequence of energy transfers.
Food Chain	A single pathway of feeding relationships among organisms in an ecosystem that results in energy transfer.
Food Web	Interrelated food chains in an ecosystem.

Created by: DouglasI16

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