Ecosystems Retake Test

Which of the following would most likely happen if the snakes disappeared from the pond food chain?

• The toads would leave the pond.

• The grass population would stay the same

• The toad population would increase.

• The grasshopper population would increase.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Grace and Elijah are exploring a food web. Can you help them figure out where the energy from producers is first transferred to?

• consumers that eat plants.

• the Sun, which creates light energy.

• decomposers that break down other organisms.

• the soil, which contains many insects.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which THREE organisms in the food web below get energy from producers?

• mice

• rabbits

• grasshoppers

• frogs

• sparrows

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Imagine you're on an ocean adventure with Liam, Abigail, and Aria! The seaweed in this environment grows on the surface of the ocean. How does the seaweed get its energy to survive?

• small organisms in the sea

• nutrients in the soil

• the Sun

• salt water

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following would most likely happen if the polar bears disappeared from this environment?

• The number of penguins would increase.

• Fish would have to find a new kind of food.

• Copepods would have to find a new kind of food.

• The number of fish would increase.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

The diagram shows a food chain. The only item missing from this food chain is:

• a consumer, such as a hawk.

• a decomposer, such as a fungus.

• a producer, such as a shrub.

• an energy source, such as the Sun.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Charlotte, Hannah, and Ava are curious: How do all consumers get their energy?

• directly from the sun

• directly from the soil

• from eating producers or other consumers

• from eating organisms that were once living

Tags

NGSS.MS-LS2-3

Elijah and Luna are exploring a grassland and come across a fascinating food web. Can you help them identify which organisms are the decomposers?

• hawks and shrews

• fungi and bacteria

• grasshoppers and squirrels

• insect-eating birds and shrews

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-5

Michael and Abigail are curious about animals. They learned that praying mantises live in many environments and eat large insects, while cats live in many environments and eat mice. How are praying mantises and barn cats alike?

• Both are mammals.

• Both are carnivores.

• Both are herbivores.

• Both are producers.

Jackson and Luna are exploring a forest when they notice a logging company cutting down trees. Which of the following will NOT happen as a result of this change?

• More species will make homes in the area.

• Animals will compete more with others for food.

• Many species will have to move to find shelter and food.

• Some animals living in the area will die because they cannot find shelter and food.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4