TEST Review: Matter & Energy in Ecosystems

Parrotfish live in the ocean and eat plantlike organisms called algae. Sunlight is shining on the fish and the algae.

Is carbon moving into the living things, moving out of the living things, or both?

• Carbon is moving into and out of the living things, at the same time.

•  Carbon is only moving into the living things; it is not moving out of them.

• Carbon is only moving out of the living things; it is not moving into them.

• There is no way to know for sure, with this information.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A scientist built a model ecosystem that contains air, plants, and animals that eat those plants. It is sealed so no material can get in or out, but the glass sides allow light to get in. The model ecosystem can also be covered to prevent light from entering. The amount of carbon in the air inside the model ecosystem started out high. Now the amount of carbon in the air is decreasing. Is the model ecosystem now in sunlight or is it covered? What is happening to the number of energy storage molecules in the plants and animals as a result?

• The model ecosystem is in sunlight, and there are fewer energy storage molecules in the plants and animals.

• The model ecosystem is in sunlight, and there are more energy storage molecules in the plants and animals.

• The model ecosystem is covered so no light gets in, and there are fewer energy storage molecules in the plants and animals.

•  The model ecosystem is covered so no light gets in, and there are more energy storage molecules in the plants and animals.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Dugongs are animals that live in the ocean and eat underwater grasses. The sun is shining on the shallow ocean water where the grasses and dugongs live.

What is happening to the carbon in the water around the grasses and dugongs? Is carbon moving into the water, moving out of the water, or both?

•  With this information, there is no way to know for sure.

• Carbon is moving into the water and out of the water, at the same time.

• Carbon is only moving into the water; it is not moving out of the water.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Some kelp (a huge algae) has been in the sun for several hours. What can the kelp (a producer) do?

• Take in carbon from the air.

• Give off carbon to the air.

• There is not enough information.

• Nothing. Its a producer.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Scientists are studying cellular respiration in a jungle ecosystem that has plants, animals, and decomposers (which consume dead things). Which group or groups of organisms in the jungle carry out cellular respiration?

• plants

• animals and decomposers

• all organisms in the jungle

• animals

Tags

NGSS.MS-LS2-3

Scientists are studying photosynthesis in a forest ecosystem that has plants, animals, and decomposers (which consume dead things). Which group or groups of organisms in the forest carry out photosynthesis?

• all organisms in the forest

• animals and decomposers

• plants and decomposers

• plants

Tags

NGSS.MS-LS1-6

If the kelp is in the sun for several hours, what does this mean for the amount of ESM's in the kelp?

• Nothing changes due to the sunlight.

• The carbon that is absorbed is used to break down ESM's.

• The ESM's die off.

• The carbon that is absorbed is used to make ESM's.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A group of shrubs are taking in carbon from the air around them. Are the shrubs in sunlight?

• The shrubs are not in the sunlight.

• The shrubs have disappeared.

• I don't know where the shrubs are.

• The shrubs are in the sunlight.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3

If a forest full of trees is in the sunlight, what is happening to the number of energy storage molecules in the trees?

• The number of energy storage molecules is decreasing.

• The number of energy storage molecules is staying the same.

• The number of energy storage molecules is increasing.

• This doesn't matter.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

Bonnie has an aquarium filled with water, plants, and fish that eat those plants. It is sealed so no material can get in or out, but the glass sides allow light to get in. The aquarium can also be covered to prevent light from entering.

The amount of carbon in the water started out low. Now, the amount of carbon in the water is increasing. Is the aquarium now in light or is it covered? What is happening to the number of energy storage molecules in the living things?

• The aquarium is covered (so it's dark), and there are more energy storage molecules in the living things.

• The aquarium is covered (so it's dark), and there are fewer energy storage molecules in the living things.

•  The aquarium is uncovered (so it's light), and there are more energy storage molecules in the living things.

• The aquarium is uncovered (so it's light), and there are fewer energy storage molecules in the living things.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

NGSS.MS-LS2-1

NGSS.MS-LS2-3