Food Webs and Ecological Pyramids Z Quick Quiz 5

In the food web above, which organism can be both a 2nd Level consumer and a 3rd Level consummerm?

• Fox

• Hawk

• Vole

• Grass

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How is energy transferred throughout the food web?

(Choose the option that best answers the question.)

• Energy is transferred when one organism consumes another.

• Energy is transferred by consumers absorbing energy from the sun.

• Animals such as the lion and jackal get energy by consuming producers.

• Organisms such as the mouse and owl pass energy to the producers.

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What is the most likely reason that worms/amphibians became more abundant in the bay after large-scale fishing? Select two. 

• Worms were preyed on less by the grazing fish since the grazing fish became rare after large-scale fishing

• Seafloor algae which is a food source for the worms became less abundant

• More Decaying matter was available as a food source for the worms/amphibians

• Worms were preyed on less by the birds since the birds became less abundant

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After 300 years of large-scale fishing, alligators went locally extinct. Which could be a reason why alligators are no longer found in the Chesapeake Bay? Select two

• There was not enough space for the alligators to reproduce

• The population of manatee which is a food source for the alligators went extinct

• The predatory fish and grazing fish population declined which are also the food source for the alligator

• The water temperature decreased

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Chesapeake bay biodiversity has decreased. Select two pieces of evidence that best support this claim.

• Species richness increased after large scale fishing

• Species richness decreased after large scale fishing

• More species are rare

• Large scale fishing had no effect on the biodiversity of Chesapeake bay

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If the oyster population decreases, which population increases in size?

• Algae

• Predatory invertebrates

• Jellyfish

• Zooplankton

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Which of the following limiting factors would be considered biotic for the bird population?

• Air pollution

• More sharks

• Fewer oysters

• Less sea turtles

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What is the role of a decomposer?

• Capture energy from the sunlight

• Transfer nutrients among organisms

• Produce oxygen for plants

• Recycle dead organic matter

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What is the original source of energy for any food chain or food web?

• Sunlight

• Prdoucer

• Consumer

• Decomposer

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In the graphic above, what percentage of consumed energy is saved as biomass?

• 50%

• 17%

• 33%

• 25%

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