Energy Flow
Photosynthesis & Respiration
Ecosystem Changes
Symbiotic Relationships
100

Only about this percent of energy is transferred from one trophic level to the next.

What is 10%?

100

This process uses sunlight to make glucose.

What is photosynthesis?

100

Organisms introduced into an ecosystem that can cause harm are called this.

What are invasive species?

100

A relationship where both organisms benefit.

What is mutualism?

200

This is the main reason energy decreases at higher trophic levels.

What is energy lost as heat through metabolism?

200

This process releases energy from glucose.

What is cellular respiration?

200

An invasive plant may decrease populations of these organisms by outcompeting them.

What are native producers/plants?  

200

A clownfish and sea anemone are an example of this type of symbiosis.

What is mutualism? 


300

Organisms that make their own food through photosynthesis are called this.

What are producers?

300

The stage of cellular respiration that does NOT require oxygen.

What is glycolysis?

300

Loss of habitat, pollution, and overharvesting all reduce this.

What is biodiversity?

300

A relationship where one organism benefits and the other is harmed.

What is parasitism?

400

This molecule stores energy made during photosynthesis.

What is glucose?

400

These substances are recycled during photosynthesis and cellular respiration

What are oxygen, carbon dioxide, glucose, and water?

400

If phytoplankton move to new waters, native fish populations may do this.

What is migrate or decrease/die off?

400

Ticks feeding on a dog is an example of this relationship.

What is parasitism?

500

Arrows in a food web show this.

What is the direction of energy transfer?

500

Cellular respiration evolved after photosynthesis because this gas first had to build up in Earth’s atmosphere.

What is oxygen?

500

Removing a predator from a food web often causes prey populations to do this.

What is increase?

500

A relationship where one organism benefits and the other is unaffected.

What is commensalism?

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