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Core Bio Unit 4 Practice

Total questions: 85

Worksheet time: 48mins

Name
Class
Date
1.
What is the original source of almost all energy in most ecosystems?
a)
carbohydrates
b)
sunlight
c)
water
d)
carbon
2.

What is the term for each level in the transfer of energy and matter within a biological community?

a)

energy path

b)

food web

c)

trophic level

d)

food pyramid

3.

Autotrophs make up the _______ trophic level in all ecosystems.

a)
First
b)
Second
c)
Third
d)
Fourth
4.

Which type of symbiosis is represented by a tick that feeds on the blood of a mammal and potentially transmits pathogens to the host?

a)

parasitism

b)

mutualism

c)

commensalism

d)

nonalism

5.

What type of symbiotic relationship exists in which both organisms benefit?

a)

competition

b)

mutualism

c)

commensalism

d)

parasitism

6.

A long-term relationship between two species in which one organism is harmed is called...

a)

mutualism.

b)

commensalism.

c)

parasitism.

d)

niche.

7.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
8.

The image provided is an example of a(n)...

a)

carnivore.

b)

herbivore.

c)

producer

d)

autotroph.

9.
The amount of energy that usually transfers from one trophic level to the next...
a)
10%
b)
20%
c)
80%
d)
50%
10.

Which of the following would be the definition of a detritivore?

a)

Animals that eat insects.

b)

Organisms that feed on rocks, recycling the nutrients back into the ground.

c)

Organisms that eat only pants.

d)

Things that feed on waste products of other organisms or dead organisms.

11.

What are the nonliving parts of an ecosystem?

a)

abiotic factors

b)

biotic factors

12.

What are the living parts of the ecosystem?

a)

biotic factors

b)

abiotic factors

13.

Water temperature would be an example of a(n) ...

a)

biotic factor.

b)

abiotic factor.

14.

What is a collection of organisms that belong to different populations but all live in the same area and interact with one another?

a)

Population

b)

Ecosystem

c)

Community

d)

Ecosphere

15.
A place where an organism lives.
a)
Terrain
b)
Habitat
c)
Community
d)
Population
16.

What is a collection of organisms that make up a community as well as all of the nonliving aspects of the environment?

a)

Population

b)

Community

c)

Habitat

d)

Ecosystem

17.

What organisms eat both living producers and other consumers?

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Detritivores

18.
The general name for organisms like animals and fungi that get their energy from eating other organisms.
a)
Producers
b)
Consumers
c)
Detritivores
d)
Carnivores
19.

Which of the following types of organisms occupy the second trophic level?

a)

Apex predators

b)

Producers

c)

Herbivores

d)

Carnivores

20.

What is any relationship in which two species live closely together for an extended period of time?

a)

resource

b)

mutualism

c)

succession

d)

symbiosis

21.

What is the study of how living things interact with one another and with their environment?

a)

Biology

b)

Lithology

c)

Ecology

d)

Farmacology

22.

Two or more members of the same species living and interacting in the same area is an example of what level of ecology?

a)

Community

b)

Population

c)

Organisms

d)

Biosphere

23.

Which of the following is not an important biogeochemical cycle in the environment?

a)

helium cycle

b)

water cycle

c)

carbon cycle

d)

nitrogen cycle

24.
Sometimes a population cannot grow to its biotic potential due to environmental factors. What are these environmental factors called?
a)
limiting factors
b)
biomes
c)
ecological pyramids
d)
carrying capasity
25.

Much of Canada is covered in coniferous evergreen trees and the soil is nutrient-poor. The winter is cold and long. What is this biome?

a)

tundra

b)

taiga or boreal forest

c)

deciduous forest

d)

grassland

26.

An organism's specific role in its habitat is called its...

a)

consumer.

b)

niche.

c)

birth right.

d)

habitat.

27.

How would the removal of the earth worms affect the other organisms?

a)

The number of bass (fish) will increase.

b)

The number of crayfish (crustacean) will decrease.

c)

The crayfish will get their energy directly from the sun .

d)

The number of bass and ospreys (bird) will increase.

28.
Is this picture an example of a mutualistic symbiosis?
a)
Yes
b)
No
29.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
30.

An animal that is hunted and eaten for food is a...

a)

predator.

b)

prey.

31.

Everywhere living things are found in the hydrosphere, lithosphere, and atmosphere combined.

a)

Population

b)

Ecosystem

c)

Biome

d)

Biosphere

32.

What is the maximum number of organisms that can survive in a particular ecosystem called?

a)

carrying capacity

b)

birth rate

c)

limiting factor

d)

death rate

33.

If the temperature and amount of rainfall changes in an area from what is normal, this can also change the populations living there.

a)

True

b)

False

34.
When a population grows past the ecosystem's carrying capacity, what happens to the population?
a)
Continues to grow
b)
The population starts to die off to return to carrying capcity
c)
The population will go extinct due to lack of resources
d)
The population grows then finds a new carrying capacity
35.
What is the carrying capacity of the graph?
a)
around 500
b)
more than 500
c)
less than 500
d)
around 600
36.
Carrying capacity is represented by which letter?
a)
r
b)
L
c)
K
d)
c
37.
Which dispersion pattern is described by organisms being spaced out equally?
a)
Uniform
b)
Random
c)
Clumped 
d)
None of these
38.
Which dispersion pattern usually is a result of resources not being evenly spread out in the environment?
a)
Uniform
b)
Random
c)
Clumped
d)
None of these
39.
What will happen to the population when the birth rate is larger than the death rate?
a)
grow
b)
shrink
c)
stay the same
40.
Which will add more organisms to a population? 
a)
5 animals die
b)
0 animals are born
c)
3 animals immigrate to the population
d)
2 animals emmigrate from the population
41.
What type of growth is represented behind?
a)
exponential
b)
logistics
c)
a good kind
d)
representative
42.
What is the carrying capacity of the following graph?
a)
1000
b)
8000
c)
800
d)
600
43.
Which kind of dispersion is #1?
a)
clumped
b)
random
c)
uniform
44.
Refer to the diagram of the survivorship curve.
Which curve best describes an organism that invests a lot of energy in parenting?
a)
A
b)
B
c)
C
d)
this is not a survivorship curve
45.
Which survivorship curve represents a species where most of the individuals live through their lives and die of old age?
a)
Type 1
b)
Type 2
c)
Type 3
46.

What does the graph represent?

a)

Emigration

b)

Exponential growth

c)

Immigration

d)

Logistic Growth

47.
Which limiting factor is independent of the number of individuals in a population?
a)
competition
b)
parasitism/disease
c)
stress
d)
natural disasters
48.
Logistic growth has 3 phases. In Phase 1, the population grows rapidly. In Phase 2, population grows slowly. In Phase 3, growth stops. What causes growth to stop in the 3rd phase of logistic growth?
a)
Emigration
b)
Immigration
c)
Exponential Growth
d)
Carrying Capacity
49.
Which factor is a density-dependent limiting factor on the population of a species?
a)
seasonal variation
b)
natural disasters
c)
unusual weather
d)
predation
50.
The graph of logistic growth can be described as...
a)
S-shaped
b)
J-shaped
c)
W-shaped
d)
U-shaped
51.

When a population has reached carrying capacity...

a)

growth and immigration are equal to death and emigration.

b)

growth and immigration are less than death and emigration.

c)

growth and immigration are greater than death and emigration

d)

growth is exponential.

52.

What is an environmental factor such as predation, disease, and competition that depends on the number of members in a population per unit.

a)

dispersion

b)

density- independent factor

c)

density- dependent factor

d)

population growth rate

53.
An environmental factor such as storms and extreme heat or cold that affects population regardless of their density
a)
density- dependent factor
b)
population density
c)
dispersion
d)
density- independent factor
54.
Which of the following is NOT a form of symbiosis?
a)
Mutualism
b)
Commensalism
c)
Parasitism 
d)
Predation
55.

What type of succession occurs when soil is no longer present after an ecological disturbance?

a)

Primary Succession

b)

Secondary Succession

c)

Tertiary Succession

d)

Quaternary Succession

56.

Which type of succession occurs when soil is still present after an ecological disturbance?

a)

Primary Succession

b)

Secondary Succession

c)

Tertiary Succession

d)

Quaternary Succession

57.

The first species to inhabit an area after a disturbance is called a(n)...

a)

pioneer species.

b)

invasive species.

c)

initial species.

d)

limiting species.

58.
Dispersion model seen when individuals are huddled around patches of resources
a)
Random
b)
Uniform
c)
Clumped
59.

Resource partitioning is best described by which of the following statements?

a)

Competitive exclusion results in the success of the superior species.

b)

Slight variation in niche allows closely related species to coexist without direct competition.

c)

Two species can coevolve and share the same niche.

d)

Species diversity is maintained by switching between prey species.

60.

Character displacement has occurred if:

a)

Two species in the same habitat evolve to be more different than if they are in different habitats due to competition.

b)

One species chases the other out of the habitat they previously shared.

c)

A characteristic is lost when an organism migrates into a new area.

d)

A characteristic lost by one species is adopted by another.

61.
When the predator population increases what happens to the prey population?
a)
Increase 
b)
Decrease
c)
Die 
d)
Stays the same
62.
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
63.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
ecological succession
c)
secondary succession
d)
intermediate
64.
The final, stable community in balance with the environment is a ________?
a)
climax community
b)
perfect community
c)
pioneer community
65.
Biomes with densely packed trees sometimes form a continuous green "roof" layer called a: 
a)
canopy
b)
ceiling
c)
green layer
d)
forest top
66.

Which biome holds the greatest biodiversity?

a)

grassland

b)

tundra

c)

tropical forest

d)

desert

67.
The trees in this biome shed their leaves and grow new ones each year:
a)
temperate deciduous forest
b)
grasslands
c)
deserts
d)
tundra
68.
The _________ biome is a cold, dry, treeless region.
a)
rainforest
b)
tundra
c)
grassland
d)
desert
69.
Tundra, taiga, and desert are all examples of a: 
a)
habitat
b)
community
c)
biome
d)
population
70.

Kangaroo rats don't drink water, so they are adapted to live in a ____________.

a)

deciduous forest

b)

savanna

c)

desert

d)

tropical forest

71.

Which biome is covered with ice most of the year?

a)

tundra

b)

grassland

c)

taiga

d)

tropical forest

72.
Plants in the desert are able to store__________ in their roots, stems and leaves.
a)
evaporation
b)
nocturnal
c)
water
d)
driest
73.
Plants and animals living in the desert must be able to adapt to extreme heat and _______________.
a)
winds
b)
chia
c)
dryness
d)
evaporation
74.

Which biome is covered in grasses?

a)

Desert

b)

Savanna

c)

Tropical Rainforest

d)

Temperate Forest

75.

Which biome has a dry season and a wet season?

a)

Desert

b)

Savanna

c)

Temperate Forest

d)

Taiga

76.

An impermeable, permanently frozen layer of soil is called...

a)

frozen ground.

b)

permafrost.

c)

ice.

d)

glacier.

77.

Which is of the following is not a type of aquatic ecosystem?

a)

ocean

b)

estuary

c)

monastery

d)

wetland

78.
What are areas where freshwater meets saltwater called?
a)
wetlands
b)
estuaries
c)
coastal byways
d)
intertidal zones
79.

What special adaptations do intertidal species have?

a)

to resist UV rays

b)

only to survive exposure to air

c)

only to survive heavy waves

d)

survive daily exposure to air and strong waves

80.

The aphotic zone is...

a)

the ocean's dark lower layer where photosynthesis cannot occur.

b)

the sunlit upper layer of the ocean where photosynthesis occurs.

c)

on the bottom of lakes, streams, and oceans.

d)

where benthos are found.

81.

This area starts several kilometers from the coast.

a)

intertidal zone

b)

coral reef

c)

continental shelf

d)

oceanic zone

82.

The part of the ocean that extends from the end of the low-tide zone to the edge of the continental shelf is the...

a)

neritic zone.

b)

pelagic zone.

c)

intertidal zone.

d)

abyssal zone.

83.

What ocean zone extends beyond the continental shelf (distance from shore)?

a)

intertidal

b)

neritic

c)

oceanic

d)

photic

84.

Any ocean water that receives sunlight

a)

aphotic zone

b)

euphotic zone

c)

photic zone

d)

oceanic zone

85.

What is a behavior or trait that allows an organism to survive in its environment?

a)

trait

b)

adaptation

c)

characteristic

d)

species

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