If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?

The bird population would decrease

The bird population would stay the same

The bird population would infinitely increase

When a population grows past the ecosystem's carrying capacity, what happens to the population?

The population starts to die off to return to carrying capcity

The population will go extinct due to lack of resources

The population grows then finds a new carrying capacity

A small group of rabbits is introduced to an isolated island where they have no natural predators. What type of population growth curve will this rabbit population exhibit over a long period of time?

logistic (S-shaped) population growth

linear population growth, with a negative slope

linear population growth, with a positive slope

A woodland area has an average deer population of 20 males and 15 females. One year a company clears half of the land to build houses. How would the deer population most likely be affected the next year?

The population would decrease because less food would be available.

The population would increase because the deer's predators would decrease.

The population would increase because the competition for resources would decrease.

The population would decrease because more people would hunt deer in that area.

Analyze the graph to answer the question. Which examples are factors that most significantly influence point W?

food availability and death rate

birth rate and space availability

The graph shows the trend in population growth of carp in a pond over a period of time. What explains the trend observed in the stable equilibrium phase?

The carp population fluctuates around its carrying capacity.

The carp population that inhabits the pond survives longer.

The ability of the carp population to obtain resources continuously improves.

The reproductive potential of the carp population is negatively impacted by outside factors.

Use the table showing data collected from a growing mid-western town from 1940-2010 to answer this question. Which statement best explains why the percentage of tree cover changed over the time period shown in the data table?

As the population grew, land was cleared for more housing and other buildings.

As the level of carbon dioxide in the air increased, trees died because they could no longer make food.

As the average temperature rose, trees were replaced by tropical species.

As the number of vehicles increased, trees were needed to produce alternative forms of fuel.

Use the data table to answer the question. What is the best prediction concerning the long-term future of the coyote population in this ecosystem?

The coyote population will begin to decrease as the mouse population continues to decline.

The coyote population will continue to increase, even as the population of mice continues to decline.

The coyote population will continue to increase, even as the soil hardness continues to increase.

The coyote population will begin to decrease as the percentage of plant cover continues to increase.

An unseasonably dry summer and fall followed by an early winter resulted in an increase in limiting factors in an ecosystem. As a result, the number of deer, then the number of wolves, decreased. What does this situation illustrate about the relationship between populations and limiting factors?

Density-independent limiting factors triggered the declines in the deer and wolf populations.

Reduced competition for limiting factors resulted in declines in the deer and wolf populations.

The increase in limiting factors was a direct result of an overabundance of biotic factors.

The early winter was the primary limiting factor for the deer and wolf populations.

The graph shows the number of deaths related to various infectious diseases. What can be inferred from the graph?

AIDS has the greatest impact on adult population growth rates.

TB causes the greatest number of deaths in children under the age of five.

Diarrheal diseases have the greatest impact on adult population growth rates.

Measles cause the greatest number of deaths in children under the age of five.

The graph shows how use of a vaccine that eliminated the rinderpest virus affected the buffalo population of the Serengeti ecosystem in East Africa. An indirect effect of the elimination of the virus was a decrease in wildfires and an increase in the tree density of the area. How did the elimination of the Rinderpest virus most likely result in a decrease in wildfires?

An increase in the number of buffalo resulted in a decrease in the grass cover needed to fuel wildfires.

The puddles dug by the buffaloes cut the path of wildfires, preventing them from spreading.

An increased buffalo population reduced the available oxygen in the air needed to fuel wildfires.

The buffalo population occupied the drier areas of the grassland, preventing the spread of wildfires.

A coastal ecosystem has a stable population of barnacles. How will the carrying capacity of the coastal ecosystem be affected if a population of blue mussels that competes with barnacles for space is introduced?

The carrying capacity of the coastal ecosystem for the barnacle species will decrease.

The carrying capacity of the coastal ecosystem for the barnacle species will increase.

The carrying capacity of the coastal ecosystem for the predators of the barnacle species will increase.

The carrying capacity of the coastal ecosystem for the prey of the barnacle species will decrease.

A group of biologists were studying the process of ecological succession. They asked, “How much time does it take for pioneer species to become established and grow in a coastal community that is experiencing primary succession?” Which scenario would allow the biologists to answer their question successfully?

Study the rate of appearance of marram grass in a new dune system on a barrier island that was newly created in the aftermath of a hurricane.

Study the rate of appearance of bayberry seedlings in a coastal agricultural field that the farmer had allowed to go unused after years of cultivation.

Study the rate of appearance of live oak seedlings in a maritime forest that had been clear-cut the previous year by a timber company.

Study the rate of appearance of oat grass in a coastal forest after a lightning-induced forest fire had destroyed all of the native vegetation.

Which event would be followed by primary succession?

A hurricane deposits enough displaced sand to create a new, low dune system.

A farmer tills under his last crop of corn and allows the field to go fallow.

A large EF-5 tornado destroys fields and forests in a rural community.

A logging company clear-cuts a pine forest, opening up the canopy to new plant species.

Which scenario describes some phase of secondary succession?

pine seedlings sprouting after a forest fire

flowers blooming in rock crevices several months after a lava flow

grass growing in the joints of a concrete sidewalk

Human activity, as well as inactivity, can have a significant effect on ecosystems. A farmer stopped planting crops in the field shown in the foreground of the photograph at the end of this past growing season. The farmer stopped planting crops in the field in the background of the photograph roughly 30 years ago. What can be determined from the photograph and the information provided?

This is an example of secondary succession, and the field in the foreground is less diverse than the field that has been uncultivated for 30 years.

This is an example of primary succession, and the field in the foreground is less diverse than the field that has been uncultivated for 30 years.

This is an example of primary succession, and the field in the foreground is more diverse than the field that has been uncultivated for 30 years.

This is an example of secondary succession, and the field in the foreground is more diverse than the field that has been uncultivated for 30 years.

Which statement best explains the effect of competition on biological succession?

Competition removes species and reduces species diversity during later succession.

Competition has a minimal role in biological succession.

Competition results in the addition of species and makes a region diverse in species during later succession.

Competition contributes to the invasion of non-native species that alters species diversity in a region during later succession.

What is the main difference between primary and secondary succession?

Primary succession begins in areas where there is bare rock, while secondary succession begins in areas where the soil is relatively intact.

Primary succession begins where only autotrophs are still present, whereas secondary succession begins where there are also heterotrophs.

Primary succession occurs in areas following a natural disaster, whereas secondary succession occurs after human activities have altered the area.

Primary succession occurs in areas following a weather-related phenomenon, while secondary succession occurs after glaciation.

What is an example of an area that is likely to undergo primary succession?

Glaciers melt and leave exposed rock

Plants die from drought and decompose

Land is bulldozed and soil remains

Which of the following is the correct order of ecological succession?

lichens - grasses - shrubs - trees

grass - shrubs - lichens - trees

lichens - shrubs - grasses - trees

grasses - lichens - shrubs - trees

What is the main difference between primary and secondary ecological succession?

Primary begins WITHOUT soil; Secondary begins WITH soil

Primary is the first state and secondary is the second stage

Primary builds plant community; secondary builds animal community

Primary begins WITH soil; Secondary begins WITHOUT soil

Which is faster: Primary or Secondary Succession?

Both Take The Same Amount of Time

A bare rock community must first undergo...

the break down of soil in primary succession

the formation of grasses in secondary succesion

Which of the following best describes primary succession?

Volcano creates a new island of rock that must break down to form an ecosystem

Volcano wipes out ecosystem that gradually grows back from ash covered soil

Forest fire burns down forest that must bounce back over time

Tornado destroys a crop that must slowly grow back over time.

Population Ecology

Quiz

•

Biology

•

9th Grade

•

Practice Problem

•

Medium

•

NGSS

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

+12

Standards-aligned

Kirsti Turner

Used 56+ times

FREE Resource

59 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Nonliving factor that affects an ecosystem...

biotic factor

abiotic factor

food chain

biome

Tags

NGSS.MS-LS2-3

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Living factors or organisms that affect an ecosystem...

abiotic factors

species

trophic level

biotic factors

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What are the biotic factors in this image?

sunlight, elephants, and grasses

sunlight, water, and air

elephants, plants, trees

Tags

NGSS.MS-LS2-4

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What are the abiotic factors in this image?

water, sunlight, dirt, air

birds and plants

water, plants, and birds

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the study of the interactions among organisms and between organisms and their environments called?

Biology

Ecology

Astronomy

Biosphere

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What type of growth is shown in the diagram?

exponential growth

logistic growth

predator-prey cycle

boom-bust curve

Tags

CCSS.HSF-IF.C.7E

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Largest number of individuals of a population that the environment can support...

carrying capacity

population crash

lag phase

mutualism

Tags

NGSS.HS-LS2-1

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Population Ecology

59 questions

Nonliving factor that affects an ecosystem...

Living factors or organisms that affect an ecosystem...

What are the biotic factors in this image?

What are the abiotic factors in this image?

What is the study of the interactions among organisms and between organisms and their environments called?

What type of growth is shown in the diagram?

Largest number of individuals of a population that the environment can support...

What do you call a period of rapid growth?

Which type of growth is best illustrated by this rabbit population?

What is the carrying capacity for this sheep population?

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