Topic 9 Review

Mona observed some of the organisms in a small section of a

lake near her home as part of her research over five years. She

recorded her observations in a table.

Which statement about zebra mussels is best supported by

evidence in the table?

• The zebra mussel population will stay the same.

• The zebra mussel population will help the ecosystem.

• The zebra mussels will continue to invade the ecosystem.

• The zebra mussels will not invade the ecosystem.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Mona did some research on the zebra mussel, which is an invasive species.

Zebra mussels were introduced to their new habitat accidentally after

becoming attached to ships traveling to America. They were able to survive in

their new habitat and are now a threat to healthy ecosystems.

Assuming this invasive species continues to spread, which

statement best shows the impact on the ecosystem?

• The mussels will benefit the ecosystem by providing nutrients

  for decomposers.

• The mussels will take resources from other organisms in the

  ecosystem and those organisms will start to die off.

• The mussels will help make a healthy ecosystem by not

  competing with other species.

• The mussels will provide more food for the producers in the

  ecosystem and will help create a healthy ecosystem.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Jade is studying the ecosystem in Glacier Bay National Park and Preserve in Alaska. Jade made this model of Glacier Bay using paper, stickers, tape,

and markers. Which two items should Jade add to her model to

show a community?

• salmon

• sun

• rock

• bear

Tags

NGSS.MS-LS2-2

Jade creates a food web to show how the different organisms in Glacier Bay

National Park and Preserve interact.

What should go below the salmon?

• Deer

• Grizzly Bear

• Plankton

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Jade creates a food web to show how the different organisms in Glacier Bay

National Park and Preserve interact.

What should go above the salmon?

• Deer

• Grizzly Bear

• Plankton

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Jade creates a food web to show how the different organisms in Glacier Bay

National Park and Preserve interact.

What should go above the berries?

• Deer

• Grizzly Bear

• Plankton

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

Glacier Bay National Park and Preserve is a temperate rainforest, so it is often

colder than a tropical rainforest. There are (fewer / more) species of organisms that live in a temperate rainforest than in a tropical rainforest. This is because factors such as (behavior / succession / temperature) determine the number and types of organisms that can live in an ecosystem.

• more and temperature

• fewer and behavior

• more and behavior

• fewer and temperature

• fewer and succession

Tags

NGSS.MS-LS2-1

Noah observes owls, mice, squirrels, and plants in an ecosystem.

He develops a food web from his observations.

Which organism in this food web uses non-food matter and energy from the

sun to make food?

• squirrels

• mice

• plants

• owls

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Mira observed the diets of different organisms. She listed her

observations in a table.

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

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

What is the missing component in her food chain model?

• Kari is missing habitat details in her model.

• Kari is missing a producer in her model.

• Kari is missing climate details in her model.

• Kari is missing a consumer in her model.

Tags

NGSS.MS-LS2-3