What may happen if the snowshoe hare was removed from the food web pictured?

The shrew population would decrease due to being only hawk food source.

The insects in the habitat would increase.

The willow tree population would decrease.

Foxes would dies due to no food source.

What effect will an invasive species have on the carrying capacity of an ecosystem?

The carrying capacity will only decrease for those in competition for same resource

The carrying capacity will increase

The carrying capacity for everyone will decrease

The carrying capacity for all animals will stay the same

Which answer is true regarding biodiversity?

An ecosystem is healthier when the biodiversity is great.

As long as there are enough producers, an ecosystem is considered to have a good amount of biodiversity.

The rain forest has an unhealthy ecosystem because its biodiversity is too great.

Biodiversity is positively affected when non-native species are introduced into an environment

Which ecosystem below describes a stable ecosystem?

This ecosystem suffered a tornado, but due to great biodiversity, it was able to be restored.

An invasive species decreased the amount of biodiversity by half

This ecosystem’s deer have increased due the loss of a predator population, now the producer population has decreased by ¼.

This ecosystem is impacted by overfishing, causing 3 fish species to become extinct.

How might deforestation impact this ecosystem?

Insects and birds will decrease

Insects and birds will increase

Describe what would happen to the zebra population and the plant population if the cheetah and hyena both left the ecosystem.

The zebra population would greatly increase, causing the plant population to decrease.

The zebra population would decrease with the absence of predators; the plant population would stay the same.

The zebra population would decrease, causing the plant population to increase.

The zebra population would greatly increase, causing the plant population to also increase.

The San Marcos salamander, Eurycea nana, is a light reddish-brown translucent salamander about 2-5 cm in length. E. nana is found only in Spring Lake and a portion of the San Marcos River. Which human activity would most likely decrease the ability of the salamanders to survive?

Increasing water consumption that decreases the flow of clean water from the springs that feed the river.

Public transportation that reduces the number of automobiles that contribute to pollution runoff into the river.

Tourism that helps fund the education programs related to tiver ecosystem conservation.

The addition of a new food source into the river that limits competition for resources.

In the mid-1980s an aggressive strain of algae known as Caulerpa was accidentally introduced into the Mediterranean Sea when a seaside aquarium cleaned out its tanks. The algae contains a toxin that prevents native herbivores from consuming it. Caulerpa quickly spread over the sea floor, crowding out many species including sponges, corals, sea fans, and lobsters. Which statement explains the most likely impact Caulerpa has had on the biodiversity of the Mediterranean Sea?

Caulerpa became dominant within the ecosystem and reduced the biodiversity.

The presence of Caulerpa within an ecosystem is an indicator of the ecosystem's health.

The spread of Caulerpa improved the habitat for many species of sea grasses, and increased the biodiversity.

Caulerpa interbred with native species with the smae adaptations within the ecosystem.

Burning of fossil fuels can increase...

Co2 in the atmosphere and cause Global warming.

The number of trees in a forest.

The amount of oxygen in the air.

Too much nitrogen in the soil can cause..

Algae blooms; decreasing oxygen in the water

High oxygen concentration in the atmosphere

What is Deforestation?

The intentional clearing of forested land or related ecosystem.

The growth of plants in a forest causing increased oxygen in the air.

The growth of shrubs and conifers towards a climax community.

The increase in food in the food web due to an increase in biodiversity.

The introduction of new species in an ecosystem can cause..

the spreading of disease; and can decimate native species in the area.

It can only increase the oxygen in the atmosphere.

It decrease the amount of land in an ecosystem.

It is another way to clear the land; deforestation.

Ecosystem Stability

Quiz

•

Biology

•

9th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-LS2-4, MS-LS2-3, HS-LS2-1

+8

Standards-aligned

Ginger Cooper

Used 4+ times

FREE Resource

26 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the carrying capacity of the following graph?

1000

8000

800

600

Tags

NGSS.HS-LS2-1

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

There would be a decrease in the small bird population.

There would be a decrease in the grass/flowers population.

There would be a decrease in the mice population.

There would be an increase in the grass/flowers population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

There would be a decrease in the small bird population.

There would be a decrease in the grass/flowers population.

There would be a decrease in the mice population.

There would be an increase in the grass/flowers population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What would most likely happen if an ecosystem no longer received sunlight?

The number of herbivores would increase

The number of plants would increase

all organisms would adapt

All living organisms would eventually die

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Examples of how humans negatively affect local ecosystems are

Building dams, deforestation (cutting down trees), adding point sources to nearby streams to allow for run-off, building roads and structures, and salting roads.

Creating laws to prohibit fishing from local streams.

Planting trees and other plants to attract native species.

Removing non-native species from the environment.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How would the biodiversity of this ecosystem be affected if the lantern fish disappeared?

The ocean sunfish population would increase.

The large shark population would die out.

The squid would die out.

There would be no change.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which organism do the owl and the weasel compete for in the food web?

Hawk

Spider

Grasshopper

Shrew

Tags

NGSS.MS-LS2-4

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