Unit 4 Eco Relationship Quiz

What is the correlation between the amount of available niches an ecosystem has and the amount of biodiversity it has?

• more niches, more biodiversity

• more niches, less biodiversity

• less niches, more biodiversity

• less biodiversity, more niches

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Match the type of relationship on the left with its proper description on the right.

• both species benefit

• commensalism

• one species benefits, while the other is

• parasitism

• 1 species benefits, other is unaffected

• mutualism

What is the predator-prey cycle?

• A cycle where predators and prey coexist without affecting each other's population.

• 
  A cycle describing the fluctuating population sizes of predator and prey species over time due to their interactions.

• 
  A cycle where only the prey population changes while the predator population remains constant.

• 
  A cycle that occurs only in aquatic ecosystems.

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In a predator–prey cycle, what happens when the prey population increases?

• 
  The predator population increases.

• The predator population decreases.

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  The predator population remains the same.

• 
  The prey population becomes extinct.

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What does an energy pyramid represent in an ecosystem?

• The biomass at each trophic level

• 
  The energy available at each trophic level

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  The diversity of species at each trophic level

• The number of organisms at each trophic level

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According to the 10 percent rule, if a trophic level has 1000 units of energy, how much energy would you find in the next trophic level?

• 1 unit

• 10 units

• 1000 units

• 100 units

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What is the SOURCE of energy in any food web or chain?

• Phosphorous Cycle

• Tertiary Consumer

• Soil

• Sun

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In an energy pyramid, which group of organisms forms the base?

• Tertiary Consumer

• Secondary Consumer

• Primary Consumer

• Producers

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In a food chain, energy is transferred from one trophic level to the next.

What happens to the energy that is not transferred?

• It is destroyed

• It is converted to matter

• It is lost as heat

• It is stored indefinitely (looooong term)

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In this food web example you can see that rain forests have many producers consumer and predators. How would you describe the rain forest biome?

• It has high biodiversity

• It has low biodiversity.

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