Sci Topic 9 TEST - Matter and Energy in Ecosystems

A tree makes it's own food using matter from the air and soil. A tree is a __________.

• decomposer

• producer

• consumer

• producer and consumer

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The abiotic factors in the otter's ecosystem include?

• air and water

• air, water, sunlight

• kelp and crabs

• water and kelp

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Which two statements about the model are true?

• Mice and rabbits do not produce their own food.

• Rabbits can consume more than one producer to get energy for survival.

• Adding another consumer to the food web makes the web more sustainable.

• Adding more producers to the food web decreases the amount of energy available to consumers.

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Which two statements are supported by the diagram?

• Polar bears are eaten only by seals.

• Harbor seals are eaten by both orcas and harp seals.

• Orcas eat seals, fish, and arctic birds.

• Harbor seals only eat fish.

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NGSS.MS-LS2-2

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Mira plans to make a food chain based on her observations. Based on the data in Mira’s table, which chain shows the most likely feeding relationships?

• phytoplankton – zooplankton – fish – dolphin – orca

• dolphin – zooplankton – fish – orca

• fish – orca – zooplankton – fish – dolphin

• phytoplankton – dolphin – zooplankton – fish – orca

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Which organisms are producers in this food web?

• owls

• mice

• squirrels

• plants

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Living organisms are?

• biotic

• abiotic

Nonliving organisms are?

• biotic

• abiotic

Organisms that consume other organisms are ?

• producers

• consumers

• decomposers

Which statement best describes the similarities of the carbon cycle and a food web?

• Both show matter moving through an ecosystem.

• Both represent what eats what in an ecosystem.

• Both show a single pathway for matter moving through a community.

• Both include abiotic factors in a community.

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NGSS.MS-LS2-3

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