Energy Pyramid / Foodwebs Interactions

Consider a less diverse ecosystem that has a simple food chain of Coyotes > Rabbits > Grasses/Shrubs. If rabbits are above carrying capacity, the coyote population increases, and a drought season has started. Which of the following is a correct prediction?

• The population of coyotes will continue to grow exponentially

• The rabbit population will decrease due to lack of food/increase in their predators

• The rabbit population will remain at above carrying capacity

• The rabbit population will decrease due to diseases increasing.

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

The overall energy source for the whole Trophic Levels/Energy Pyramid is ultimately...

• Decomposers

• Sun

• Autotrophs

• Heterotrophs

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which trophic level below will have the LEAST amount of energy available to it?

• Primary Producers

• Primary Consumers

• Secondary Consumers

• Tertiary Consumers/Carnivores/Apex Predators

Tags

NGSS.MS-LS2-3

Why does a snake, who could eat a rabbit, receive much less energy that the original energy in the food the rabbit eats?

• Plants need/use more energy than snakes or rabbits

• 10% of energy is lost as energy transfers up trophic levels

• 90% of energy is lost as energy transfers up trophic levels

• Energy is gained as you go up each trophic level

Tags

NGSS.MS-LS2-3

Look at the energy pyramid. If 10,000 KJ is available/harnessed by grasses, how much energy is available for the ROBIN?

• 10,000 KJ

• 1,000 KJ

• 100 KJ

• 10 KJ

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Look at the example food web. Which shows a correct order of energy flow?

• Leaves > Caterpillar > Opossum > Copperhead

• Berries > Opossum > Earthworm > Copperhead

• Rabbit > Grasses > Hawk

• Earthworm > Rabbit > Copperhead

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Look at the food web. The 2 primary producers are... (MULTIPLE SELECT)

• Oak Tree

• Fungi

• Grasses

• Rabbit

• Grasshopper

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NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3

What do the opossum, bird, and rabbit all have in common?

• They are all producers

• They are all consumers

• They are all carnivores

• They are all herbivores

Based on this food web, select the following that are heterotrophs... (MULTIPLE SELECT)

• Grasses

• Fox

• Oak Tree

• Owl

• Chipmunk

Look at this food web. Which of the following is true?

• Mice and deer compete for food

• Tiger and Eagle compete for food

• Mice are the only primary consumers

• Lions only have 1 main source of food

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2