Ecology Food Chain

The diagram below shows the relationship between some of the organisms in a marine food web. Which of the following is MOST LIKELY to happen if a large number of phytoplankton are killed from runoff entering the ocean?

• The number of porpoises would probably stay the same because porpoises are far removed from phytoplankton in the food web

• The number of zooplankton would probably increase because they wouldn’t have to compete with phytoplankton for food.

• The number of salmon would probably decrease because there would be less food available for zooplankton and herring.

• The Sun would probably not emit as much energy because there would not be as many phytoplankton in the ocean.

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NGSS.MS-LS2-1

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What is a producer?

• an organism that gets energy from eating other organisms

• an organisms that uses sunlight to make its own food

• an organism that gets energy from eating dead organisms, non-living material or waste

• an organism that uses chemical energy to make its own food

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NGSS.MS-LS1-6

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Example of a decomposer

• fungus

• mouse

• plants

• frogs

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NGSS.MS-LS2-3

Which relationship describes predator/prey

• hawks and shrubs

• mountain lion and deer

• frogs and trees

• grasses and crickets

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NGSS.MS-LS2-4

How are phytoplankton similar to small trees?

• Both are at the top of the food chain

• Both conduct photosynthesis

• Both grow in soil

• Both are about the same size

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Recently, a family of bobcats(predator) moved into an area with a large rabbit(prey) population. What changes may occur in the food chain?

• The rabbit population may increase

• The rabbit population may decrease

• The rabbit population may increase first, then decrease

• The rabbit population will remain the same

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NGSS.MS-LS2-1

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Which is the correct food chain order?

• Producer --> 1st Consumer --> 2nd Consumer 

• Producer <-- 1st Consumer <-- 2nd Consumer

• 2nd consumer --> 1st consumer --> Producer

• 1st Consumer --> 2nd consumer --> Producer

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NGSS.MS-LS1-6

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The fox in this food web would be considered a:

• Tertiary Consumer

• Producer

• Secondary Consumer

• Primary Consumer

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The rabbit in this food web would be considered a:

• Decomposer

• Producer

• Secondary Consumer

• Primary Consumer

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NGSS.MS-LS2-2

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What may happen if the snowshoe hare was removed from the food web pictured?

• The insects in the habitat would increase.

• The shrew population would decrease due to being only hawk food source.

• The willow tree population would decrease.

• Foxes would dies due to no food source. 

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NGSS.MS-LS2-1

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