Copy of Unit 8 Re-Test (5/2/2026)

Nødvendig

1

A student is making a table to describe the processes of photosynthesis and cellular respiration. Complete the table by identifying which process causes each result shown in the table.

Andre svarmuligheder:

Pollination

Transcription

Cellular Respiration

Photosynthesis

Zebra mussels are small freshwater organisms native to Eastern Europe. They were introduced to the United States through ballast water from ships. These mussels attach to hard surfaces and reproduce rapidly, forming large colonies.

As filter feeders, they remove large amounts of plankton from the water, reducing food available for native species.

Nødvendig

1

What is the MOST likely impact of zebra mussels on aquatic ecosystems?

They increase the food supply for native species, improving ecosystem stability.

They reduce available food resources, which can harm native organisms.

They produce oxygen, increasing survival rates of fish populations.

They have no significant effect on the ecosystem.

1

Nødvendig

1

Many freshwater ecosystems rely on healthy populations of algae to produce oxygen through photosynthesis.
When excess fertilizers enter lakes and rivers, nutrient levels increase, causing rapid algae growth (algal blooms).
As the algae die and decompose, bacteria use up oxygen in the water, reducing oxygen available for fish and other aquatic organisms.
Which statement describes how environmental changes are MOST LIKELY affecting this ecosystem?

Decreasing fertilizer runoff will increase algal growth and decrease oxygen levels, harming aquatic life.

Increasing fertilizer runoff will increase algal growth and decrease oxygen levels, harming aquatic life.

Increasing fertilizer runoff will decrease algal growth and increase oxygen levels, helping aquatic life.

Decreasing fertilizer runoff will decrease algal growth and decrease oxygen levels, harming aquatic life.

BIO.13.C

1

Which statement is an example of how oxygen cycles through organisms in ecosystems involving giraffes and plants?

Giraffes release oxygen into the air for plants to absorb.

Plants take in oxygen from the air and are then consumed by giraffes.

Plants release oxygen into the air and giraffes inhale it.

Oxygen is only found in soil and does not cycle through organisms.

Nødvendig

1

A coastal wetland ecosystem is home to several interacting species. A food web with some of these species is shown below.
An environmental change that harms which organism would cause the MOST instability in the bayou ecosystem?

Herons

Small Fish

Algae

Zooplankton

Nødvendig

1

During a dry season, conservationists restores a wetland by adding native plants and improving water availability. These plants provide food and shelter for insects, fish, and birds. As a result, more species are able to survive and reproduce in the area.
This environmental change can affect the stability of the ecosystem by causing it to become -

less stable, as more species compete for the same resources.

less stable, as the increase in plants reduces biodiversity.

more stable, as increased biodiversity helps support a balanced ecosystem.

more stable, as organisms no longer share symbiotic relationships.

Nødvendig

1

Which statement is an example of how carbon moves through a food chain involving oak trees and deer?

Deer release carbon dioxide, and oak trees take it in through their roots.

Oak trees absorb carbon dioxide from the air, and deer release carbon dioxide.

Oak trees take in carbon from animals, and deer release it into the soil.

Deer take in carbon dioxide directly from the air, and oak trees release it.

Nødvendig

1

A food web representing a Gulf Coast ecosystem is shown.
Based on this food web, what would happen if the bald eagle went extinct?

The Blue crab would decrease leading to the alligator increasing

The Canada goose would decrease leading to the clover grass decreasing

The Canada goose would increase leading to the clover grass increasing

The Loggerhead sea turtle would increase leading to the clover grass decreasing

B.C.12C

Nødvendig

1

In a forest ecosystem, wolves prey on deer, and deer feed on plants. After wolves are removed, scientists observe changes in the ecosystem.
Which of the following is the most likely outcome if wolves are permanently removed?

Deer will decrease and plants will increase causing the ecosystem to become unstable.

Deer will decrease and plants will decrease due to overgrazing.

Deer will increase and plants will decrease due to overgrazing.

Deer will increase and plants will increase due to overgrazing deer.

Nødvendig

1

Which graphic organizer best compares the energy inputs and outputs of cellular respiration?

null

Copy of Unit 8 Re-Test (5/2/2026)

Zebra mussels are small freshwater organisms native to Eastern Europe. They were introduced to the United States through ballast water from ships. These mussels attach to hard surfaces and reproduce rapidly, forming large colonies.

As filter feeders, they remove large amounts of plankton from the water, reducing food available for native species.

What is the MOST likely impact of zebra mussels on aquatic ecosystems?

Which statement is an example of how oxygen cycles through organisms in ecosystems involving giraffes and plants?

A coastal wetland ecosystem is home to several interacting species. A food web with some of these species is shown below.
An environmental change that harms which organism would cause the MOST instability in the bayou ecosystem?

Which statement is an example of how carbon moves through a food chain involving oak trees and deer?

A food web representing a Gulf Coast ecosystem is shown.
Based on this food web, what would happen if the bald eagle went extinct?

In a forest ecosystem, wolves prey on deer, and deer feed on plants. After wolves are removed, scientists observe changes in the ecosystem.
Which of the following is the most likely outcome if wolves are permanently removed?

Which graphic organizer best compares the energy inputs and outputs of cellular respiration?

Zebra mussels are small freshwater organisms native to Eastern Europe. They were introduced to the United States through ballast water from ships. These mussels attach to hard surfaces and reproduce rapidly, forming large colonies.

As filter feeders, they remove large amounts of plankton from the water, reducing food available for native species.

What is the MOST likely impact of zebra mussels on aquatic ecosystems?

Which evidence supports the answer to Part A?

Which statement is an example of how oxygen cycles through organisms in ecosystems involving giraffes and plants?

A coastal wetland ecosystem is home to several interacting species. A food web with some of these species is shown below.
An environmental change that harms which organism would cause the MOST instability in the bayou ecosystem?

Which statement is an example of how carbon moves through a food chain involving oak trees and deer?

A food web representing a Gulf Coast ecosystem is shown.
Based on this food web, what would happen if the bald eagle went extinct?

In a forest ecosystem, wolves prey on deer, and deer feed on plants. After wolves are removed, scientists observe changes in the ecosystem.
Which of the following is the most likely outcome if wolves are permanently removed?

Which graphic organizer best compares the energy inputs and outputs of cellular respiration?

Which evidence supports the answer to Part A?

Copy of Unit 8 Re-Test (5/2/2026)

Copy of Unit 8 Re-Test (5/2/2026)

Zebra mussels are small freshwater organisms native to Eastern Europe. They were introduced to the United States through ballast water from ships. These mussels attach to hard surfaces and reproduce rapidly, forming large colonies.

As filter feeders, they remove large amounts of plankton from the water, reducing food available for native species.

What is the MOST likely impact of zebra mussels on aquatic ecosystems?

Which statement is an example of how oxygen cycles through organisms in ecosystems involving giraffes and plants?

A coastal wetland ecosystem is home to several interacting species. A food web with some of these species is shown below.An environmental change that harms which organism would cause the MOST instability in the bayou ecosystem?

Which statement is an example of how carbon moves through a food chain involving oak trees and deer?

A food web representing a Gulf Coast ecosystem is shown.Based on this food web, what would happen if the bald eagle went extinct?

In a forest ecosystem, wolves prey on deer, and deer feed on plants. After wolves are removed, scientists observe changes in the ecosystem.Which of the following is the most likely outcome if wolves are permanently removed?

Which graphic organizer best compares the energy inputs and outputs of cellular respiration?

Zebra mussels are small freshwater organisms native to Eastern Europe. They were introduced to the United States through ballast water from ships. These mussels attach to hard surfaces and reproduce rapidly, forming large colonies.

As filter feeders, they remove large amounts of plankton from the water, reducing food available for native species.

What is the MOST likely impact of zebra mussels on aquatic ecosystems?

Which evidence supports the answer to Part A?

Which statement is an example of how oxygen cycles through organisms in ecosystems involving giraffes and plants?

A coastal wetland ecosystem is home to several interacting species. A food web with some of these species is shown below.An environmental change that harms which organism would cause the MOST instability in the bayou ecosystem?

Which statement is an example of how carbon moves through a food chain involving oak trees and deer?

A food web representing a Gulf Coast ecosystem is shown.Based on this food web, what would happen if the bald eagle went extinct?

In a forest ecosystem, wolves prey on deer, and deer feed on plants. After wolves are removed, scientists observe changes in the ecosystem.Which of the following is the most likely outcome if wolves are permanently removed?

Which graphic organizer best compares the energy inputs and outputs of cellular respiration?

Which evidence supports the answer to Part A?

A coastal wetland ecosystem is home to several interacting species. A food web with some of these species is shown below.
An environmental change that harms which organism would cause the MOST instability in the bayou ecosystem?

A food web representing a Gulf Coast ecosystem is shown.
Based on this food web, what would happen if the bald eagle went extinct?

In a forest ecosystem, wolves prey on deer, and deer feed on plants. After wolves are removed, scientists observe changes in the ecosystem.
Which of the following is the most likely outcome if wolves are permanently removed?

A coastal wetland ecosystem is home to several interacting species. A food web with some of these species is shown below.
An environmental change that harms which organism would cause the MOST instability in the bayou ecosystem?

A food web representing a Gulf Coast ecosystem is shown.
Based on this food web, what would happen if the bald eagle went extinct?

In a forest ecosystem, wolves prey on deer, and deer feed on plants. After wolves are removed, scientists observe changes in the ecosystem.
Which of the following is the most likely outcome if wolves are permanently removed?