Energy Flow in Ecosystems

Consumers breakdown the macromolecules of the organisms they have eaten to release ATP in a process called

• photosynthesis.

• chemosynthesis.

• cellular respiration.

• ATP liberation.

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The levels of nourishment in a food chain are called

• pyramids of numbers.

• trophic levels.

• food phases.

• biomagnitudes.

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Because energy flows from organism to organism and is used for metabolism or is converted to heat the next organism in the chain only receives 10% of the energy from the previous level. This is known as the

• Heat Regulation.

• Energy Loss Directive.

• Heat Transfer Rule.

• Rule of 10.

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In the food chain pictured, what type of organism is the bird?

• producer

• primary consumer

• secondary consumer

• tertiary consumer

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The model of the energy available at each level that ALWAYS gets smaller as you go up is the

• energy pyramid.

• numbers pyramid.

• biomass pyramid.

• food web.

What happens to the solar energy absorbed by plants during photosynthesis?

• It is recycled by plants and returned to the atmosphere.

• It is converted into oxygen and glucose

• It is stored as heat within the plant for cellular functions

• It is transformed into chemical energy.

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What process converts radiant energy into chemical energy?

• respiration

• phototropism

• combustion

• photosynthesis

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

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An energy pyramid represents what?

• How much sunlight is available for the ecosystem to use. 
• How much energy a particular organism needs. 
• How much energy is needed to build a pyramid. 
• The amount of energy available to the next 'feeder' in a food web.

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How much energy is available to be passed on to the next level in a food web?

• 100%

• 10%

• 50%

• 75%

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