Unit 6 Investigating Energy Flow Through Ecosystems

A diagram of a pond food chain is provided. Which of the following could possibly increase the total amount of energy the catfish population receives within its food chain?

• An increase in the number of beetles

• An increase in the number of hawks

• A decrease in the number of plants

• A decrease in the number of hawks

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NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What gas do plants release as a result of photosynthesis?

• Nitrogen

• Oxygen

• Water

• Carbon Dioxide

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Photosynthesis produces the chemical energy that a plant’s cells need. What form does this chemical energy take?

• Water

• Oxygen

• Glucose

• Carbon dioxide

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

A diagram is provided. The food web depicted here would be able to support the smallest number of which of the following organisms?

• Diatoms

• Shrimp

• Squid

• Tuna

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NGSS.MS-LS2-3

NGSS.MS-LS2-1

The diagram provided illustrates the process of photosynthesis, including the substances used by and produced by plants. What is the identity of the chemical represented by the question mark in the diagram?

• Hydrogen

• Water

• Nitrogen

• Oxygen

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NGSS.MS-LS1-6

Plants need radiant energy and which of the following resources for photosynthesis?

• Glucose and water

• Oxygen and water

• Carbon dioxide and water

• Oxygen and glucose

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NGSS.MS-LS1-6

A diagram is provided. Which of the following correctly shows one path that energy would flow through this ecosystem?

• Grasses → Termite → Monkey → Eagle

• Hyena → Mongoose → Mouse → Grasses

• Grasses → Termite → Grasshopper → Monkey

• Acacia trees → Giraffe → Lion → Vulture

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Green plants capture and store light energy from the Sun through the process of –

• cell division.

• respiration.

• homeostasis.

• photosynthesis.

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NGSS.MS-LS1-6

A food web for a grassland ecosystem is shown. Which of the organisms listed in the food web gets its energy by eating primary consumers?

• Grasses

• Mountain Lion

• Rabbits

• Deer

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

Which best describes a process of photosynthesis? Photosynthesis is the process by which plants convert –

• radiant energy into chemical energy.

• heat energy into mechanical energy.

• heat energy and chemical energy.

• chemical energy into heat energy.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6