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WorksheetsBio - Unit 1 Review
Total questions: 102
Worksheet time: 52mins
An ecosystem is more likely to recover from a natural disaster like flooding if it has higher species richness and higher species abundance.
True
False
What determines biodiversity?
richness
abundance
both richness and abundance
What is the abundance for species A?
25
15
18
10
Identify the species richness of this community.
4
6
25
24
Which species has the lowest abundance?
B
C
D
E
F
Which community has the highest abundance of species A?
Community A
Community B
Equal abundance in both communities
Which community has higher species richness?
Community A
Community B
Richness is equal in both communities
What is the richness at this location?
8
40
10
6
Site A had 100 flowers belonging to 10 species.
Site B had 150 flowers belonging to 8 species.
Site C had 200 flowers belonging to 5 species.
Put the sites in order from GREATEST richness to LEAST richness.
1) A
2) B
3) C
1) C
2) B
3) A
1) B
2) A
3) C
1) C
2) A
3) B
Site A had 200 flowers belonging to 15 species.
Site B had 150 flowers belonging to 20 species.
Site C had 300 flowers belonging to 5 species.
Put the sites in order from GREATEST richness to LEAST richness.
1) A
2) B
3) C
1) C
2) B
3) A
1) B
2) A
3) C
1) C
2) A
3) B
Both individuals of species D die of a new disease. The area's richness...
goes down by 1
goes down by 2
does not change
goes up by 1
Site A had 200 flowers belonging to 15 species.
Site B had 150 flowers belonging to 20 species.
Site C had 300 flowers belonging to 5 species.
Put the sites in order from GREATEST abundance to LEAST abundance.
1) A
2) B
3) C
1) C
2) B
3) A
1) B
2) A
3) C
1) C
2) A
3) B
Which is true below?
Species A abundance is less than Species B abundance.
Species A abundance is less than Species C abundance.
Species D abundance is less than Species C abundance.
Species E abundance is less than Species F abundance.
Which species has the lowest abundance at this location?
B
D
E
G
Which species has the highest abundance at this location?
B
D
F
G
All energy in an ecosystem comes from the sun. This energy is passed through the ecosystem as organisms eat other organsims. This is called ...
Ominvores
Herbivores
Detritivores
Flow of energy
Animal that gets its energy and nutrition from eating plants.
Parasite
Herbivore
Carnivore
Ominvore
Animal that gets its energy and nutrition from eating meat.
Detritivore
Ominvore
Carnivore
Herbivore
Organisms that produce their own food mostly through photosynthesis (producers). Examples are plants and algae.
Ominvore
Detritivore
Heterotroph
Autotroph
Organisms that get their energy and nutrition from other organisms (consumers).
Heterotroph
Autotroph
Decomposer
Detritivore
Heterotrophs that get energy and nutrition from dead or decaying organisms or their waste products and recycle nutrients back to the ecosystem.
Producer
Trophic
Decomposer
Autotrooph
Heterotrophs that “clean up” the ecosystem by eating dead and decaying organisms.
Autotrophs
Herbivores
Ominvores
Detritivores
The level in an Ecological pyramid that includes all the organisms that share the same place in a food chain.
Trophic Levels
Food Levels
Producer Levels
Environmental Systems
Autotrophs--The bottom trophic level where all organisms produce their own food, usually by photosynthesis.
Trophic Levels
Producers
Ominvores
Herbivores
Herbivores--The second trophic level where herbivores eat the primary producers.
Detritivores
Autotrophs
Producers
Primary Consumers
The third trophic level where the animals eat herbivores.
Abiotic Factor
Biotic Factor
Secondary Consumer
Secondary Producer
The fourth trophic level where animals eat secondary consumers or below.
Herbivore
Autotroph
Tertiary Consumer
Tertiary Producer
Only 10% of the energy is passed on from one trophic level to the next. 90% is lost as heat due to cellular respiration or waste.
Tertiary Consumer
Biotic Factor
Abiotic Factor
10% Rule
A network of trophic relationships in an ecosystem.
Food Chain
Food Web
Abiotic Factor
Biome
If producers in an ecosystem have 6,500 kcal of energy, how much would you expect the primary consumers to have?
6.5 kcal
65 kcal
650 kcal
65,000 kcal
If producers in an ecosystem have 3,600 kcal of energy, how much would you expect the SECONDARY consumers to have?
3.6 kcal
36 kcal
360 kcal
36,000 kcal
If primary consumers in an ecosystem have 1,000 kcal of energy, how much would you expect the PRODUCERS to have?
1.0 kcal
10 kcal
100 kcal
10,000 kcal
T/F: Plants are the only autotrophs.
TRUE
FALSE
Grass is considered a ...
consumer
producer
decomposer
composer
The arrows in a food web represent...
the flow of energy
pointing from predator to prey
producers
the sun
A biologist reported that a sample of ocean water had 5 million diatoms of the species Coscinodiscus centralis per cubic meter. What was the biologist measuring?
Biodiversity
Density
Population size
Carrying capacity
The maximum population size that can be supported in a particular area without destroying the habitat is the ...
birth rate
carrying capacity
death rate
population size
population density
What happens if a population grows past its carrying capacity?
The population keeps growing
The population starts to die off
The entire species will go extinct
The carrying capacity just increases
What is the carrying capacity of the graph?
around 500
more than 800
less than 300
around 700
carrying capacity cannot be increased (it's a set number)
When the death rate rises and the birth rate lowers...
population increases
population decreases
population stays the same
all of these
All of the organisms of one species living in the same area.
Individual
Population
Community
Ecosystem
Which of these is a population? [CHOOSE ALL THAT APPLY]
Tigers in Asia
Hawks and pigeons in Washington DC
Daisies in a park
Coconut trees on a small island
Gum and hickory trees in Montgomery County
Which of the pairs below would result in no net change to the population size?
Births up 50
Immigration up 50
Deaths down 10
Emigration up 10
Births up 20
Emigration down 20
Deaths up 30
Immigration down 30
What type of population growth is shown in the graph?
Exponential
Logistic
Decreasing population
Stable population
What type of population growth is shown in the graph?
Exponential
Logistic
Decreasing population
A biologist reported that an aquatic ecosystem had 5 million diatoms of the species Coscinodiscus centralis. What was the biologist measuring?
Biodiversity
Density
Population size
Carrying capacity
A biologist reported that an aquatic ecosystem could support 5 million diatoms of the species Coscinodiscus centralis. What was the biologist measuring?
Biodiversity
Density
Population size
Carrying capacity
Which of these factors is abiotic? [CHOOSE ALL THAT APPLY]
Predators
Food sources
Rainfall
Climate
Water
Which of these factors is biotic? [CHOOSE ALL THAT APPLY]
Predators
Food sources
Rainfall
Climate
Water
Which group has the greatest population DENSITY?
10 deer in a 50-acre area
2 mushrooms in a 1-acre area
750 bees in a 10-acre area
40 wolves in a 100-acre area
Which group has the greatest population DENSITY?
100 deer in a 50-acre area
20 mushrooms in a 1-acre area
7,000 bees in a 700-acre area
10 wolves in a 100-acre area
Which of the following is NOT an example of a limiting factor?
amount of food
limiting nutrient
exponential growth
disease
A biotic or abiotic resource in the environment that causes population size to decrease is a
growth factor
limiting factor
carrying capacity
limiting nutrient
A density-independent factor happens:
depending on the number of predators hunting prey
depending on the size of the population
if there are no resources left in a habitat
regardless of the size of the population
Population density can be best described as:
The amount of deaths that occur in a population
The amount of births that occur in a population
The amount of individuals in a given space.
The amount of available nutrients in an ecosystem
All of the following are density-independent factors except:
seasonal changes
hurricanes
less space
deforestation
Which factor would contribute to an exponential growth rate in a given population?
higher death rates
less competition
less resources
lower birth rates
In a given area, if the population of predators increases, the population of prey will _____________.
increase
decrease
remain about the same
go extinct
Emigration is:
When a population continues to increase.
When individuals move into an area.
When individuals move out of an area.
The study of human popuations.
Typical population growth is described as:
Logarithmic growth
Logistic growth
Linear growth
Exponential growth
The movement of individuals into an area is known as:
Supplementation
Emigration
Immigration
Eradication
Which of the following is NOT an example of a Density Dependent Factor?
Parasitism
Natural Disasters
Predation
Competition
Which of these is a population? [CHOOSE ALL THAT APPLY]
All the lions in the world
Cats and mice in Washington DC
Sand crabs in Ocean City
New Caledonian Crows on a small island
Oak and maple trees in Montgomery County
Which of these things would cause a population to INCREASE? [CHOOSE ALL THAT APPLY]
births
deaths
emigration
immigration
A population has 100 individuals at the start of October. These events happen during the month:
20 Births,
15 Deaths,
10 Immigrants,
2 Emigrants
How many individuals are in the population at the end of October? Enter a numeral.
(a)
A population has 100 individuals at the start of October. These events happen during the month:
8 Births,
10 Deaths,
10 Immigrants,
4 Emigrants
How many individuals are in the population at the end of October? Enter a numeral.
(a)
A population has 100 individuals at the start of October. These events happen during the month:
30 Births,
25 Deaths,
5 Immigrants,
40 Emigrants
How many individuals are in the population at the end of October? Enter a numeral.
(a)
Which group has the greatest population DENSITY?
100 deer in a 50-acre area
2 mushrooms in a 10-acre area
750 bees in a 750-acre area
40 wolves in a 10-acre area
Which of the following is not a possible cause of ecological succession?
fire
flood
earthquake
change of season
Which of the following is an example of primary succession?
lichens growing on rocks following a volcanic eruption
grasses growing after a forest fire
oak trees replacing pine trees in a forest
non-native species introduced into a climax community
Which of the following describes how an abiotic factor can impact the population dynamics in an ecosystem?
A parasite that invades a host can reproduce and cause a decline in the host species population.
Organisms that compete for the same resources will keep each other from overpopulating.
Predators will prevent herbivores from depleting the plants and other resources in an ecosystem.
Seasonal variations in temperature can cause some of the individuals in a population to die.
How is primary succession different from secondary succession?
Primary succession starts with soil.
Secondary succession start with bare rock.
Primary succession starts with bare rock, with lichens and moss.
Fire is an example of primary succession.
Abandoned railroad tracks are overgrown with weeds. Ten years later there are small aspen trees growing in the middle of the tracks. This change is an example of:
Primary succession
Biological evolution
Secondary succession
Heterotrophic nutrition
Maggie saw 4 species of birds on her walk (3 birds of each species). The species richness of the birds during her walk was ...
3
4
7
12
Global climate change can be summarized as:
More CO2 released --> Atmosphere thickens --> Atmosphere traps more heat --> Climate gets warmer
Less CO2 released --> Atmosphere thickens --> Atmosphere traps more heat --> Climate gets warmer
More CO2 released --> Atmosphere gets thinner --> Cold air escapes --> Climate gets warmer
More CFCs released --> Ozone hole shrinks --> Atmosphere traps more heat --> Climate gets warmer
Severe human overpopulation may never happen due to the demographic transition. Which choice below best describes the demographic transition?
As countries develop, better medicine and agriculture causes their death rates to decline. This causes an unending increase in population.
Climate change will reduce the amount of worldwide food and increase the spread of disease, causing population to decline.
As population increases, greater pollution and fewer resources like food, shelter, and space cause increased death rates, bringing population numbers down.
Countries move from high birth and death rates to lower birth and death rates as they develop from a pre-industrial to an industrialized economy.
What process is occurring in the image?
Predation
Primary succession
Secondary succession
Climate change
Glacier retreat is a dangerous effect of climate change because...
glaciers keep the planet from getting too hot
glaciers prevent ocean acidification
glaciers provide drinking water for billions of people
glaciers are great for skiing
When the sea otters increased in Monterey Bay, the Bay's richness increased because...
the otters ate the urchins, which lowered the urchins' numbers.
the otters provided food to the sharks.
the otters actually decreased the richness of the Bay.
the otters ate the urchins, who preyed on the kelp. When kelp increased, hundreds of species could live in it.
Which of the following have been changed or altered due to climate change ?
droughts
flooding
melting of polar ice caps
all of the above
Click on the map to help answer this question: What can we predict about the population of Feral Swine for the year 2016?
There will be less feral swine in 2016 than there were in 1982.
There will be more feral swine in 2016 than there were in 2010
There were fewer feral swine in 2004 than 1982.
There will be no change in feral swine population.
