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Unit 3 Biology

Total questions: 184

Worksheet time: 3hrs 10mins

Name
Class
Date
1.

What does an ecosystem comprise of?

a)

Only forests

b)

Only water bodies

c)

Varied habitats from microhabitat to ecoregion

d)

Only living organisms

2.

What factors play a crucial role in shaping ecosystems?

a)

Only soil type

b)

Biotic and abiotic factors

c)

Only precipitation

d)

Only temperature

3.

What does biodiversity include?

a)

Only the diversity of species

b)

Only the number of animals

c)

Only the diversity of ecosystems

d)

The diversity of species and ecosystems

4.

What is the smallest scale of habitat within an ecosystem?

a)

Biome

b)

Ecoregion

c)

Biosphere

d)

Microhabitat

5.

Which of the following is an abiotic factor?

a)

Insects

b)

Water

c)

Animals

d)

Plants

6.

Which level of biodiversity is concerned with the variety of ecosystems within a region?

a)

Genetic diversity

b)

Species diversity

c)

Ecosystem diversity

d)

Community diversity

7.

What type of biome is characterized by low rainfall and sparse vegetation?

a)

Tropical rainforest

b)

Temperate forest

c)

Desert

d)

Tundra

8.

Which of the following best describes the role of decomposers in an ecosystem?

a)

They produce oxygen through photosynthesis

b)

They consume living plants and animals

c)

They break down dead material and recycle nutrients

d)

They pollinate flowering plants

9.

How do producers contribute to an ecosystem?

a)

By consuming other organisms

b)

By decomposing dead organisms

c)

By converting sunlight into chemical energy through photosynthesis

d)

By pollinating plants

10.

Which of the following is a characteristic feature of a wetland ecosystem?

a)

Low biodiversity

b)

Permanent ice cover

c)

High salinity

d)

Water saturation in the soil

11.

What role do herbivores play in a food chain?

a)

They recycle nutrients back into the soil

b)

They transfer energy from producers to carnivores

c)

They control the population of producers

d)

Both B and C

12.
A feeding relationship where one organism hunts and one is hunted.
a)
Commensalism
b)
Decomposistion
c)
Mutualism
d)
Predator-Prey
13.
A relationship between two organisms where one benefits while the other is harmed is known as what?
a)
Decomposition
b)
Consummerism
c)
Mutualism
d)
Parasitism
14.
A feeder fish usually follows behind sharks to pick up food scraps that they leave behind. The fish gets food and the shark is unaffected. This is an example of:
a)
Mutualism
b)
Commensalism
c)
Parasitism
d)
Decomposition
15.
An organism that needs to use chemicals to make its own food is known as a(n):
a)
Heterotroph
b)
Autotroph
c)
Decomposer
d)
Consumer
16.
This term describes a living part of an environment.
a)
Biotic factor
b)
Sunlight
c)
Abiotic Factor
d)
Niche
17.
An organism that eats other organisms to obtain energy is known as a:
a)
Mutualist
b)
Autotroph
c)
Producer
d)
Heterotroph
18.
Non-living components of an environment are considered to be:
a)
Biotic Factors
b)
Heterotrophs
c)
Abiotic factors
d)
Decomposers
19.
A group of particular organisms that belong to the same species that live in the same habitat is known as a:
a)
Population
b)
Ecosystem
c)
Community
d)
Biome
20.
This term refers to the total number of organisms that a particular habitat can support.
a)
Population
b)
Carrying capacity
c)
Ecosystem
d)
Niche
21.
A large part of the Earth that is defined by its own unique type of environment is known as a:
a)
Community
b)
Species
c)
Niche
d)
Biome
22.

What is a keystone species?

a)

A species that helps to hold an ecosystem together

b)

A species that lives in or around rocks

c)

Keys and stones have nothing to do with ecology

d)

A keystone isn't a living thing, it's just a stone

23.
The ecological niches of three bird species are shown in the diagram. What is the advantage of each bird species having a different niche?
a)
As more birds feed higher in the tree, available energy increases.
b)
More abiotic resources are available for each bird.
c)
Predators are less likely to feed on birds in a variety of locations.
d)
There is less competition for food.
24.
What effect does biodiversity have on a community?
a)
It makes destruction by insects impossible. 
b)
It makes primary succession more likely.   
c)
 It enables species to survive in a desert.
d)
It enables the community to withstand changes.
25.

the differentiation of niches that enables similar species to coexist in a community

a)

character displacement

b)

climax community

c)

resource partitioning

d)

pioneer species

26.

A relationship in which two different organisms live in close association with each other

a)

interspecific competition

b)

Mutualism

c)

Symbiosis

d)

Commensalism

27.

"Organisms that have moved to a location that does not naturally support them."

a)

Invasive species

b)

Destructive species

c)

Unwelcomed species

d)

Infected species

28.

The ecological role an organism performs in their specific environment is considered the organism's...

a)

Habitat

b)

Population

c)

Biome

d)

Niche

29.
For plants, ______ can include sunlight, water, and soil nutrients.
For animals, ______can include nesting space, shelter, types of food, and places to feed.
a)
niche
b)
communities
c)
resources
d)
biomes
30.
When put together, one organism outcompetes the other for resources.  This is an example of:
a)
competitive exclusion principle
b)
speciation
c)
biological niche
d)
evolution
31.
Based on the graph shown, how can you tell sea otters are a keystone species?
a)
as the sea otter population decreases, biodiversity increases
b)
as sea otter population increases, biodiversity increases
c)
changes in the sea otter population have little effect on biodiversity 
d)
the sea otter population dereases due to the presence of urchins
32.

a condition or resource that keeps a population at a certain size

a)

biodiversity

b)

micro-habitat

c)

habitat

d)

sustainability

e)

limiting factor

33.

Select the best definition for the term 'ecological niche'

a)

The physical space where a species lives

b)

A summation of the relationships and interactions a species has with other biotic and abiotic factors

c)

A representation of what a species preys on, and what preys on it i.e. it's place in a food chain

d)

When a species does a job or function that no other species carries out

34.

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

a)

There would be a decrease in the small bird population.

b)

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

c)

There would be a decrease in the mice population.

d)

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

35.
Where an organism lives
a)
habitat
b)
niche 
c)
heterotrogh
d)
biosphere
36.

Removing a species from a food web typically results in...

a)

Increased population of their prey

b)

Increased population of their predators

c)

Plant overgrowth

d)

The whole system to collapse

37.
In this food chain, what will happen if the frogs become extinct?
a)
The snakes will increase.
b)
The grasshoppers will decrease.
c)
The eagles will remain the same.
d)
The grasshoppers will increase.
38.
A food chain shows the transfer of ___ from one organism to another. 
a)
matter
b)
consumers
c)
energy
d)
habitat
39.

What is the competitive exclusion principle?

a)

The competitive exclusion principle is a theory that has been disproven by recent scientific research.

b)

The competitive exclusion principle only applies to plants and not animals.

c)

The competitive exclusion principle states that two species competing for the same limited resources cannot coexist in the same ecological niche for an extended period of time.

d)

The competitive exclusion principle states that two species can coexist in the same ecological niche for an extended period of time.

40.

Define resource partitioning in ecosystems.

a)

The sharing of unlimited resources among different species to increase competition and reduce coexistence.

b)

The exclusion of certain species from accessing resources to increase competition and reduce coexistence.

c)

The random distribution of resources among different species to increase competition and reduce coexistence.

d)

The division of limited resources among different species to reduce competition and allow coexistence.

41.

Describe the relationship between competitive exclusion and species diversity.

a)

Competitive exclusion has no effect on species diversity.

b)

Competitive exclusion can lead to an increase in species diversity.

c)

Competitive exclusion only affects certain species, not overall diversity.

d)

Competitive exclusion can lead to a decrease in species diversity.

42.

Which type of succession occurs on freshly formed on barren land?

a)

Primary Succession

b)

Secondary Succession

43.

Which of the following is something that can create new land?

a)

Snow

b)

Rain

c)

Volcanic Eruption

d)

Wind

44.

What do we call the first species that colonize a new area?

a)

Foreign Species

b)

Pioneer Species

c)

Intraspecies

d)

Interspecies

45.

Which of the following are examples of pioneer species? (select all that apply)

a)

Maple Tree

b)

Grass

c)

Lichens

d)

Moss

46.

Which of the following appears last?

a)

Grass

b)

Bushes

c)

Softwoods (conifers)

d)

Hardwoods (Maple, Oak, etc)

47.

Which type of succession occurs after some kind of natural disaster wipes out most of the vegetation in a habitat?

a)

Primary Succession

b)

Secondary Succession

48.

Which type of succession is quicker?

a)

Primary Sucession

b)

Secondary Succession

49.
After a forest fire, an ecosystem would start regrowth through -
a)
primary succession
b)
secondary succession
c)
climax community
d)
limiting factors
50.
succession that occurs in an area with no soil
a)
ecological succession 
b)
primary succession 
c)
secondary succession
d)
pioneer speciles
51.

Which experiences the least change over time?

a)

Pioneer Species

b)

Primary Succession

c)

Aquatic Succession

d)

Climax Community

52.

Which of the following best describes primary succession?

a)

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

b)

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

c)

Forest fire burns down forest that must bounce back over time

d)

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

53.

If farmers use a controlled burn to prevent forest fires, what would most likely be the first plants to return?

a)

trees

b)

shrubs

c)

mosses

d)

grasses

54.

Which would most likely result in primary succession?

a)

old forest growing

b)

undisturbed prairie

c)

pollution kills mountain lake species

d)

a Newly formed volcanic island

55.
What is the order of succession shown in this figure?
a)
A, B, C, D
b)
B, A, D, C
c)
C, D, A, B
d)
D, A, B, C
56.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
ecological succession
c)
secondary succession
d)
intermediate
57.
What is the name given to lichen or algae after a primary succession?
a)
pioneer species
b)
volunteer species
c)
founder species
d)
conqueror species
58.
After a volcanic eruption, lava covers the land. What is the order that plants grow to repopulate the area?
a)
Lichens → Shrubs → Grasses → Trees
b)
Lichens → tree → shrubs→Grasses
c)
Grasses → Lichens → Shrubs → Trees
d)
Lichens → Grasses → Shrubs → Trees
59.

What is an example of a disturbance that could bring about secondary succession?

a)

Humans cut down many trees in a small region

b)

A volcanic eruption covers a village in lava.

60.
Which level will contain plants?
a)
A
b)
B
c)
C
d)
D
61.
A secondary consumer 
a)
eats primary consumers
b)
eats producers
c)
eats plants
62.
Level 1 is called the _____________ trophic level. 
a)
Tertiary consumer
b)
Tertiary producer
c)
Primary consumer
d)
Primary producer
63.
Position that an organism occupies based on what it eats
a)
biomass
b)
autotroph
c)
trophic level
d)
carnivore
64.

In this energy pyramid, which organisms have the most energy available?

a)

Producers

b)

Carnivores

c)

Herbivores

d)

Top Predator

65.
The diagram is intended to show relationships in an ecosystem. What do the arrows represent?
a)
The direction of population migration
b)
Differences in dietary habits
c)
Progressively smaller organisms
d)
The direction of the energy flow
66.
The diagram represents a model of a food pyramid.  Which statement best describes what happens in this food pyramid?
a)
More organisms die at higher levels than at lower levels, resulting in less mass at higher levels.
b)
Energy is lost to the environment at each level, so less mass can be supported at each higher level.
c)
When organisms die at higher levels, their remains sink to lower levels, increasing the mass of lower levels.
d)
Organisms decay at each level, and thus less mass can be supported at higher levels
67.
Organisms that do not decompose can be buried and become what?
a)
water
b)
nutrients
c)
air
d)
fossil fuels
68.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
69.
What process occurs when coal (fossil fuel) is used for energy?
a)
Decomposition
b)
Combustion
c)
Pressurization 
d)
Respiration 
70.

Organisms need nitrogen in order to...

a)

To breathe

b)

To obtain water for growth

c)

To build proteins & DNA

d)

To regulate temperature

71.
Plants and animals cannot use nitrogen directly from the air.
a)
True
b)
False
72.

Which of these nitrogen cycle processes converts atmospheric nitrogen to a soil form of nitrogen that is usable by plants?

a)

nitrogen fixation

b)

nitrification

c)

denitrification

d)

ammonification

73.
How nitrogen is "fixed" into useable form for plants...
a)
through action of bacteria only
b)
through lightning only
c)
through action of bacteria & lightning
d)
through photosynthesis
74.

How does fertilizer affect the ecosystem?

a)

the bacteria reproduce quicker

b)

causes increase in rain, thereby increasing flooding of ponds and lakes

c)

create large algae blooms in the water

d)

cause the nitrogen fixing bacteria in the soil to be more productive

75.

What is the formula for atmospheric nitrogen?

a)

N

b)

N2

c)

NH3

d)

NO3

76.

What process occurs when dead plant and animal matter decomposes and nitrogen is released back into the atmosphere?

a)

Assimilation

b)

Fixation

c)

Ammonification

d)

Denitrification

77.

What is the process where plants use nitrates to grow?

a)

Nitrogen Fixation

b)

Ammonification

c)

Assimilation

d)

Nitrification

78.
Organisms that break down dead plants & animals and release nitrogen back into atmosphere...
a)
bacteria
b)
plants
c)
animals
d)
producers
79.

_____ is the conversion of organic nitrogen into ammonia

a)

Nitrogen Fixation

b)

Ammonification

c)

Denitrification

d)

Assimilation

80.

What is the main reservoir of nitrogen?

a)

Water bodies

b)

Plants

c)

Atmosphere

d)

Soil

81.

The process that convert nitrates (NO3-) back to nitrogen gas (N2) there by replenishing N2 in the atmosphere is called

a)

Nitrogen fixation

b)

Deamination

c)

Denitrification

d)

Nitrification

82.

What is the variety of life in an area that is determined by the number of different species in that area?

(a)  

83.

What is the number of different species and the relative abundance of each species in a biological community?

(a)  

84.

Which community has higher species richness?

a)

Community A

b)

Community B

c)

Both community A & B

85.

Which community has the highest abundance of species A?

a)

Community A

b)

Community B

86.

What species have the lowest abundance?

a)

B

b)

C

c)

D

d)

E

e)

F

87.

Identify the species richness of this community.

a)

4

b)

6

c)

25

d)

24

88.

'Biodiversity' includes the diversity of

a)

Species

b)

Species & genetics

c)

Species, genetics & ecosystems

d)

Species, genetics, ecosystems & abiotic factors

89.

The abundance of species B in the offshore reef is

a)

2

b)

3

c)

4

d)

5

90.

The relative abundance of species E on the inshore reef is closest to

a)

2

b)

2%

c)

18

d)

18%

91.

The species richness of the offshore reef is

a)

17

b)

5

c)

0.71

d)

4

92.

Which community has both the highest species richness and highest evenness of grasshoppers?

a)

I

b)

II

c)

III

d)

IV

93.

The percentage abundance of Species B is

a)

25

b)

25%

c)

35

d)

35%

94.

Calculate the SDI of Forest B

a)

0.54

b)

0.37

c)

0.63

d)

0.46

95.

The correct order for labelling the symbiotic relationships in the image would be

a)

Parasitism, mutualism, commensalism

b)

Mutualism, symbiosis, parasitism

c)

Commensalism, mutualism,

parasitism

d)

Mutualism, Commensalism, parasitism

96.

Limiting factors are

a)

Biotic factors that restrict population size and diversity.

b)

Abiotic factors that characterize the environments that an organism can live in.

c)

Biotic and abiotic factors that control food webs in ecosystems.

d)

Biotic and abiotic factors that restrict an organism's ability to live in and area.

97.

You need to be able to 'compare ecosystems across spatial and temporal scales'. Spatial and temporal mean

a)

Time and space respectively

b)

Space and time respectively

c)

Species and temperatures respectively

d)

Speed and time respectively

98.

The table lists the number of individuals of each species found within four field communities. Which community is most diverse overall?

a)

Community 1

b)

Community 2

c)

Community 3

d)

Community 4

99.

Which community clearly has low species evenness?

a)

Community 1

b)

Community 2

c)

Community 3

d)

Community 4

100.
 Which biome is more likely to survive a change in the environment?
a)
High (rich) biodiversity
b)
Low (poor) biodiversity
101.
Which biome is more biodiverse?
a)
Desert
b)
Sand
c)
Tundra
d)
Rainforest
102.

Select the correct statement based on the image above:

a)

Community 1 has a more evenly spread abundance or number of each species than Community 2.

b)

Community 1 has a less evenly spread abundance or number of each species than Community 2.

c)

The evenness of species cannot be determined from this example.

103.

Select the correct statement based on the image above:

a)

Community 1 has a greater species diversity than Community 2.

b)

Community 2 has a greater species diversity than Community 1.

c)

The species diversity cannot be determined from this example.

104.

What is the species richness of habitat A?

a)

2

b)

3

c)

4

d)

5

105.

Calculate the Simpson's biodiversity index of the following community of organisms (rounded to two decimal places):

Species A: 15

Species B: 12

Species C: 2

Species D: 1

Species E: 3

(a)  

106.

Calculate the Simpsons biodiversity index of the community below correct to one decimal place (use pen and paper to draw a table)

Sea holly: 2

Sand Couch: 8

Sea bindweed: 1

Sporobolus pungens: 1

Echinophora spinosa: 3

Total: 15



(a)  

107.

Use the following map to identify which ecosystem is predominantly distributed in Tasmania.

a)

Open woodland

b)

Sclerophyll forest

c)

Temperate rainforest

d)

Tropical rainforest

108.

Which one of the following describes the correct conditions in a desert ecosystem?

a)

High rainfall; high temperature

b)

High rainfall; low temperature

c)

Low rainfall; high temperature

d)

Low rainfall; low temperature

109.

Which of the following is an abiotic selection pressure for Atriplex, a desert plant?

a)

Salt availability

b)

Availability of sunlight

c)

Water availability

d)

Availability of gases

110.

A selection pressure is best described as:

a)

a change in the organism to suit its environment.

b)

a change in the environment.

c)

a feature that changes in the organism.

d)

a feature that changes over time.

111.

What is the most suitable technique used to determine the abundance of plants?

a)

Mark–release–recapture

b)

Quadrats

c)

Hand counting all the trees

d)

Area sampling

112.

Identify a disadvantage of mark–release–recapture sampling.

a)

It is only suitable for plants.

b)

It can only be used on slow moving animals.

c)

It can be disruptive to the environment.

d)

It is difficult to undertake.

113.

The graph below illustrates the distribution of three mangrove species and their distance from the sea.


Which species/s would need to be more tolerant to saline conditions?

a)

A and B

b)

B and C

c)

A and C

d)

All of them

114.

There are three main sampling techniques that can be used in ecology. Which of the following is not one of them?

a)

Random

b)

Systematic

c)

Stratified

d)

Clustered

115.

Which of the following statements describes stratified sampling?

a)

Stratified sampling is used when the population has known subsets.

b)

Stratified sampling is used when every item has the same chance of being selected.

c)

Stratified sampling is where samples are chosen in a regular way.

d)

All of the statements describe an aspect of stratified sampling.

116.

Fill in the blank: The two kinds of transects are _________ transect and __________ transect.

(a)  

117.

In one study using capture, mark, recapture to estimate population size, 521 individuals were captured and marked. One month later, the traps were reset and 438 individuals were captured. Of these, 136 were marked. Use the Lincoln index to calculate the size of the population.

N=M×nmN=\frac{M\times n}{m}  

(a)  

118.

The largest number of individuals that an environment can support long term is...

a)

carrying capacity

b)

emigration

c)

immigration

d)

population density

119.

What happens if a population grows past its carrying capacity?

a)

The population keeps growing

b)

The population starts to die off

c)

The entire species will go extinct

d)

The carrying capacity just increases

120.

Something that regulates the size of a population is called...

a)

a limiting measure

b)

a limiting factor

c)

carrying capacity

d)

biodiversity

121.

What is the carrying capacity of the graph?

a)

1000

b)

8000

c)

800

d)

600

122.

What are factors that affect carrying capacity?

a)

Biotic only

b)

Biotic and abiotic

c)

Depends on the ecosystem

d)

Abiotic only

123.

What is the carrying capacity of the graph?

a)

around 500

b)

more than 800

c)

less than 300

d)

around 700

124.
Which of the following would INCREASE the carrying capacity of an ecosystem?
a)
increase in predators
b)
disease
c)
increase in available food
d)
drought
125.
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 ?
a)
The bird population would stay the same
b)
The bird population would infinitely increase
c)
The bird population would decrease
126.

A scientist was studying a population of fish in a pond over a period of 10 years. He observed that the population increased each year for 3 years, and then remained nearly constant for the rest of the study. The best explanation for this observation is that the population had

a)

stopped reproducing

b)

reached carrying capacity

c)

mutated into a different species

d)

run out of food and all died

127.

The Binomial nomenclature has how many parts to its scientific naming system?

a)

1

b)

2

c)

3

d)

4

128.

(a)   in the same genus are thought to be closely related.

129.

Levels get increasingly specific from?

a)

kingdom to species

b)

phylum to genus

c)

mammalia to family

d)

order to family

130.

What is the Linnaean system based on?

a)

DNA similarities

b)

characteristic similarities

c)

physical similarities

d)

color similarities

131.

What is the order of classification from largest to smallest?

a)

Species, Genus, Family, Order, Class, Phylum, Kingdom, Domain

b)

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

c)

Order, Kingdom, Phylum, Domain, Class, Genus, Family, Species

d)

Kingdom, Domain, Order, Phylum, Class, Genus, Family, Species

132.

Identify the following classification system:

a)

Simpson's Diversity Index

b)

Specht's System

c)

Holdridge Life System

d)

Linnaean classification system

133.

Identify the following classification system:

a)

Simpson's Diversity Index

b)

Specht's System

c)

Holdridge Life System

d)

Linnaean classification system

134.

Which of the following abiotic factor has the greatest impact on biodiversity in a marine ecosystem:

a)

Water

b)

Salt

c)

Light

d)

Temperature

135.

Define 'old growth forest'

a)

Significant ecosystems with high biodiversity

b)

Significant ecosystems with low biodiversity

c)

Really old forests with ancient trees

d)

A forest that only contains old trees

136.

Which strategy below is specific to managing productive soils?

a)

Rotating monoculture crops to repair nutrients in the soil

b)

Using fertilisers to keep nutrients in soil

c)

Clearing land to increase sunlight

d)

Removing mulch from soil

137.

Which strategy below is specific to managing old growth forests?

a)

Regularly allow backburning to manage waste products on forest floor

b)

Remove younger trees so they don't outcompete older trees

c)

Restricting logging activities

d)

Minimise introduction of protected regions in ecosystems

138.

All organisms that live in a particular place and the physical aspects of that place make up a(n)....

a)

Ecosystem

b)

Community

c)

Habitat

d)

Food chain

139.

Differentiate a community and an ecosystem (choose all that apply)

a)

Communities consist of non-living components

b)

Communities only consist of living components

c)

Ecosystems consist of non-living components

d)

Ecosystems consist of living components

e)

Ecosystems consist of living and non-living components

140.

Which of the following is considered a biome? (Choose all that apply)

a)

Deserts

b)

Switzerland

c)

Grasslands

d)

United States

141.

The term used to organise organisms into groups

(a)  

142.

Identify the community showing the greatest species evenness. Each community has 1000 members in total, spread between four species.

a)

A

b)

B

c)

C

d)

D

143.

Limiting factor that depends on population size

Ex: competition, predation and herbivory, parasitism and disease, stress from overcrowding

a)

density dependent

b)

density independent

c)

carrying capacity

d)

tolerance

144.

The maximum number of individual organisms that an ecosystem can comfortably support is

a)

exponential growth

b)

carrying capacity

c)

population

d)

tolerance

145.
The movement of individuals away from a population
a)
emigration
b)
immigration
c)
dispersion
d)
population density
146.
How fast a specific population grows
a)
dispersion
b)
population density
c)
population growth rate
d)
density- independent factor
147.

Many fish die due to a drastic change in water temperature.

a)

Density-Dependent

b)

Density-Independent

148.

An extensive drought in the plains threatens wildebeest, giraffe, zebra, and springbok populations.

a)

Density-Dependent

b)

Density-Independent

149.

Which of the following would NOT be an example of a density dependent limiting factor?

a)

fire

b)

disease

c)

lack of food

d)

space

150.

Which of the following would NOT be an example of a density independent factor?

a)

predation

b)

tornado

c)

hurricane

d)

fire

151.

What is happening to the population between the 4th and 8th unit of time?

a)

It is increasing slowly.

b)

It is increasing rapidly.

c)

It is constant.

d)

It is decreasing.

152.

How would you describe the population size at the12th unit of time?

a)

The population is constant.

b)

The population is decreasing.

c)

The population is increasing.

d)

The population increases then decreases.

153.

The way a species interacts with abiotic and biotic factors to obtain food, find shelter, and fulfill other needs.

a)

Niche

b)

Habitat

c)

Community

d)

Ecosystem

154.

Long life span

a)

K-selected

b)

r-selected

155.

many offspring

a)

K-selected

b)

r-selected

156.

short life span

a)

K-selected

b)

r-selected

157.

mice

a)

K-selected

b)

r-selected

158.

elephant

a)

K-selected

b)

r-selected

159.

mosquitos

a)

K-selected

b)

r-selected

160.

few offspring

a)

K-selected

b)

r-selected

161.

These organisms typically live in unstable, unpredictable environments & are able to reproduce rapidly (exponentially). They do not take care of their young & are subject to predation.

a)

k-strategist

b)

r-strategist

c)

m-strategist

d)

s-strategist

162.

These organisms occupy stable environments, are larger in size and have longer life expectancies. They produce, during their life spans, fewer offspring, but place a greater investment in each.

a)

k-strategist

b)

r-strategist

c)

m-strategist

d)

s-strategist

163.

A mouse with a short life span, produces more offspring than can survive, and gives little or no parental care is a

a)

R-selected species

b)

K-selected species

164.

This graph represents a _____ growth curve

a)

Logistic

b)

Exponential

165.

An elephant that has only 1 offspring at a time, has a long life span, and provides parental care throughout maturity is a

a)

K- selected species

b)

R-selected species

166.

A good way to estimate the population size of a species that moves around.

a)

mark-recapture

b)

full census

c)

linear transect

d)

DNA sequencing

167.

The following graph represents __________ growth, which is typically seen with _______ species.

a)

Logistic Growth;

r-selected

b)

Logistic Growth;

k-selected

c)

Exponential Growth;

r-selected

d)

Exponential Growth;

k-selected

168.

Which graph would you typically see for a k-selected species?

a)
b)
c)
d)

None of the above

169.

In a population of mice, 20 mice are born, 30 die, 12 immigrate into the population and 56 emigrate from the population. If the population started with 67 mice, what is the percentage of population growth?

a)

-36%

b)

25%

c)

-12%

d)

60%

170.

In a population that starts with 12 flamingos, 2 emigrate to Florida, 3 are born, 1 dies, and 20 flamingos join the population. What is the population growth percentage?

a)

-167%

b)

67%

c)

167%

d)

-12%

171.

A population in a small town now has 1,030 people. Last year, it started with 900 people. What caused the increase in the population?

a)

Births and Emigration

b)

Births and Immigration

c)

Deaths and Emigration

d)

Deaths and Immigration

172.

A high rate of _____________ would cause a negative population growth.

a)

Births and Immigration

b)

Births and Emigration

c)

Deaths and Immigration

d)

Deaths and Emigration

173.

What is happening at the 'A' on the graph?

a)

the population overshoots above the carrying capacity

b)

the population stops growing

c)

growth begins to slow down due to limited resources

d)

growth is speeding up due to an abundance of resources

174.

What point on the graph represents the carrying capacity?

a)

A

b)

B

c)

C

d)

D

175.
What does the graph represent?
a)
Emigration
b)
Exponential growth
c)
Immigration
d)
Logistic Growth
176.
Which limiting factor is independent of the number of individuals in a population?
a)
competition
b)
parasitism/disease
c)
stress
d)
natural disasters
177.
Species that could become endangered in the near future are called
a)
unlucky
b)
extinct
c)
endangered
d)
threatened
178.
The sea otter is a(n) ___________ that influences the survival of many other species in its ecosystem.
a)
Cute furry creature
b)
endangered species
c)
keystone species
d)
important animal
179.
Introduced or invasive species are often difficult because:
a)
They contribute to habitat fragmentation
b)
They do not adapt well to new environments
c)
They increase biodiversity
d)
They often lack natural predators
180.
A species described as r-strategist would definitely NOT have which of the following characteristics?
a)
clumped population pattern
b)
much parenting
c)
many offspring
d)
random population pattern
181.
__________ growth shows growth of a population under environmental constraints (carrying capacity-K) that sets a maximum population size 
a)
logistic
b)
exponential
c)
niche
d)
uniform
182.
J-Shaped curves
a)
show a decline after an increase
b)
display populations that have reached carrying capacity
c)
represent exponential growth
d)
does not depend on the numbe rof resources
183.

Which spot on the graph represents the lag phase, otherwise known as the phase of the graph where the population is first starting to colonize the area? (Click the correct hot spot).

A
B
C
184.

What type of population growth does this graph show?

a)

Logistic Growth

b)

Exponential Growth

c)

R-Selected Species

d)

Immigration

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