Food Chains and Food Webs in Ecosystems

If all of the squirrels were removed from the food web above, which organism's population would decrease first?

• Mountain Lions

• Antelopes

• Hawks

• Coyotes

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If all of the grasshoppers were removed, how many organisms would lose a source of energy?

• One

• Four

• Five

• Seven

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A tiger gets the energy it needs to survive when it-

• drinks water from streams

• warms itself in the sun

• eats another animal

• sleeps in the tall grass

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Plants and other producers get their energy by-

• removing energy from water

• absorbing the soil

• using the sunlight to create food (photosynthesis)

• releasing a gas into the air

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If fish are eliminated from this ecosystem, which other organism will be most affected? (a)  

• Baleen Whale

• Krill

• Penguin

• Phytoplankton

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If there were a fire in the grasslands, what change would likely occur in the food web there?

• There would be an increase in consumers

• Producers would need to find a new energy source

• Animals that eat plants would move away or starve

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Select the different types of consumers below:

• Producer

• Carnivore

• Herbivore

• Omnivore

• None of the above

Every food chain begins with energy from the _______.

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Select all of the producers below:

• Grass

• Ducks

• Flowers

• Trees

• Dogs

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A community of organisms interacting with one another and with nonliving factors in an area is called...

• environment

• population

• ecosystem

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