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CUA 4 Review

Total questions: 60

Worksheet time: 1hrs 27mins

Name
Class
Date
1.

Primary succession occurs in an area that has:

a)

soil

b)

no soil

c)

some soil

d)

none of these

2.

___ are the first organisms to colonize an area and begin the process of ecological succession.

a)

foundational organisms

b)

introductory organisms

c)

primary organisms

d)

pioneer species

3.

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

a)

Glaciers melt and leave exposed rock

b)

Plants die from drought and decompose

c)

Land is bulldozed and soil remains

4.

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

a)

grass - shrubs - lichens - trees

b)

lichens - shrubs - grasses - trees

c)

lichens - grasses - shrubs - trees

d)

grasses - lichens - shrubs - trees

5.

What is the term that describes a steady and stable community?

a)

peak community

b)

turf community

c)

climax community

d)

disturbed community

6.

Which is faster: Primary or Secondary Succession?

a)

Primary Succession

b)

Secondary Succession

c)

Both Take The Same Amount of Time

7.

Which of the following is NOT a pioneer species?

a)

Shrubs

b)

Lichen

c)

Mosses

d)

Grass

8.

T or F: Succession increases biodiversity.

a)

true

b)

false

9.

The Final stage of ecological succession is...

a)

Mature Tree Growth

b)

Climax Community

c)

Pioneer Community

d)

Primary Succession

10.
Natural disasters such as flooding and tornadoes are linked to ________________.
a)
primary
b)
secondary
c)
old field
d)
ecosystem
11.
After a forest fire, an ecosystem would start regrowth through -
a)
primary succession
b)
secondary succession
c)
climax community
d)
limiting factors
12.

What is formed during primary succession that doesn't need to be formed during secondary succession?

a)

pioneer species

b)

soil

c)

climax community

d)

grasses

13.

Which experiences the least change over time?

a)

Pioneer Species

b)

Primary Succession

c)

Aquatic Succession

d)

Climax Community

14.
What is ecological succession?
a)
A slow change in an environment
b)
A change that takes days in an environment
c)
No change
d)
Abiotic change
15.
Which is the correct order in primary succession?
a)
Rocks, Lichens & Mosses, Bushes & Shrubs, Trees
b)
Lichens & Mosses, Rocks, Trees, Bushes & Shrubs 
c)
Trees, Bushes and Shrubs, Lichens & Mosses, Lichens & Mosses
d)
Rocks, Grass, Trees, Bushes & Shrubs
16.
ends in a climax community
a)
primary succession 
b)
secondary succession
c)
both types of succession
17.
Series of changes where an existing community is destroyed
a)
primary succession
b)
secondary succession
c)
commensalism
d)
competition
18.
Series of changes where other organisms have not previously lived
a)
primary succession
b)
secondary succession
c)
commensalism
d)
competition
19.
Succession type?
a)
primary succession
b)
secondary succession
c)
tertiary succession
d)
variable succession
20.
Final illustration (#8) shows
a)
pioneer species
b)
climax community
c)
only biotic factors
d)
only abiotic factors
21.
A climax community is ….
a)
the beginning of a new ecological succession.
b)
the rocks in a new environment.
c)
the fire that will cause destruction.
d)
an area that reaches its greatest growing potential.
22.
Which is a producer?
a)
deer
b)
tall grass
c)
lion
d)
worm
23.
Which type of consumer eats plants only?
a)
Herbivores
b)
Omnivores
c)
Carnivores
d)
Scavengers
24.
Which type of consumer eats meat only?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Omnivores
25.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
26.
What is a food web?
a)
a web created by a spider to trap its food
b)
a network of food chains in an ecosystem
c)
a community of plants and animals
d)
the food that one animal eats
27.

SC.912.L.17.9 Food Webs and Energy Transfer

A team of ecologists observed feeding patterns of several populations in the desert. The energy pyramid shown below depicts the feeding patterns the ecologist observed.

Which of the following best explains the difference in the amount of available energy in the trophic levels of the desert ecosystem?

a)

There is less energy available in the producers because their tissues are less dense than those at higher trophic levels.

b)

There is more energy available in the second trophic level because less energy is needed for hunting compared to the higher trophic levels.

c)

There is more available energy in the birds of prey because they have greater muscle mass for storing energy than organisms in lower trophic levels have.

d)

There is less available energy in the fourth trophic level because of the loss of energy through metabolism in each of the lower trophic levels.

28.

SC.912.L.17.9 Food Webs and Energy Transfer

A diagram of a food web is shown below.

Which organism receives the least amount of energy from the producers?

a)

Hawk

b)

Rabbit

c)

Grasshopper

d)

Mouse

29.

SC.912.L.17.9 Food Webs and Energy Transfer

The diagram below shows the flow of carbon in a terrestrial ecosystem.

Which will most likely happen if the decomposers are removed from the carbon cycle?

a)

The amount of carbon dioxide in the atmosphere will increase.

b)

The amount of carbon dioxide in the atmosphere will decrease.

c)

The amount of carbon dioxide used by producers will increase.

d)

The amount of carbon dioxide needed by consumers will decrease.

30.

SC.912.L.17.9 Food Webs and Energy Transfer

Complete burning of plant material returns carbon primarily to the

a)

herbivores.

b)

water.

c)

vegetation.

d)

atmosphere.

31.

SC.912.L.17.9 Food Webs and Energy Transfer

The diagram below shows the cycling of nutrients in an ecosystem.

The removal of which of the following groups would cause an immediate decrease in the amount of energy flowing through the system?

a)

Producers

b)

Consumers

c)

Decomposers

d)

Inorganic nutrients

32.

What role do decomposers play in a food web?

a)

They produce their own food through photosynthesis

b)

They help recycle nutrients by breaking down dead organisms

c)

They consume live plants

d)

They capture solar energy

33.

If frogs disappear from this food web what animal would probably decrease in population?

a)

owl

b)

deer

c)

grass

d)

dinosaurs

34.

Which animal is a secondary consumer?

a)

grasshopper

b)

tree

c)

snake

d)

Patrick

35.

Which is a primary consumer?

a)

Hawk

b)

grasshopper

c)

tree

d)

corn dog

36.

What happens to chemical energy as you move up the energy pyramid?

a)

more and more is created

b)

it is used by each level and you get less as you move up

c)

there is no such thing

d)

Mario

37.

What would happen if the mullet dissapeared?

a)

more belini because of predetor loss

b)

more dolphins because of more food

c)

crabs would be happy

38.

What is the ultimate source of energy for a food web?

a)

producers

b)

plants

c)

The Sun

d)

consumers

39.

How much energy is transffered between each trophic level?

a)

90%

b)

10%

c)

50%

d)

1%

40.

What do the arrows represent in a food web/food chain?

a)

They point to the organism that is being eaten

b)

How sunlight flows within an ecosystem

c)

The direction of energy flow between organisms

d)

How water is transferred within a habitat

41.

Which ecosystem has the greatest biodiversity?

a)
b)
42.

How do biodiversity and sustainability work together?

a)

The higher the biodiversity, the greater the sustainability.

b)

The lower the biodiversity the greater the sustainability.

c)

The higher the biodiversity, the less sustainable the ecosystem.

d)

Biodiversity has nothing to do with sustainability.

43.

Why is biodiversity in an ecosystem so important?

a)

Because it can help humans where to determine good places to develop farm land.

b)

Because places that have a healthy biodiversity are unaffected by major disturbances.

c)

Because having a high biodiversity allows for fewer opportunities of competition for similar resources.

d)

Because having a high biodiversity allows ecosystems to withstand disturbances (major changes).

44.
Why does primary succession take longer to reach climax community?
a)
Because trees do not perform photosyntheses.
b)
Because climax community is in a forrest.
c)
Because primary succession already has soil
d)
Because primary succession does not have soil
45.

What is happening to the biodiversity of the aquatic ecosystem as a result of the Great Barrier Reef dying?

a)

Increased

b)

Decreased

c)

Stayed the same

46.

Great Biodiversity = Great Sustainability

a)

True

b)

False

47.

After a volcanic eruption the lava cools and becomes rock. Which succession must take place in order for vegetation (plants) to return?

a)

Primary Succession

b)

Secondary Succession

48.
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
49.

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

a)

Primary begins WITHOUT soil; Secondary begins WITH soil

b)

Primary is the first state and secondary is the second stage

c)

Primary builds plant community; secondary builds animal community

d)

Primary begins WITH soil; Secondary begins WITHOUT soil

50.

Whish habitat has the highest biodiversity?

a)

Area A

b)

Area B

c)

Area C

d)

Area D

51.

Recently, a family of bobcats moved into an area with a large rabbit population. What changes may occur in the ecosystem?

a)

The rabbit population may increase.

b)

The rabbit population may increase first, then decrease.

c)

The rabbit population may decrease.

d)

The rabbit population will remain the same.

52.

Identify the correct food chain that demonstrates the energy flow of this food web.

a)

plant >grasshopper >mouse >snake

b)

plant >eagle >mouse> snake

c)

plant >deer > squirrel >coyote

d)

plant >coyote >snake >eagle

53.

What is a producer?

a)

an organism that gets energy from eating other organisms

b)

an organisms that uses sunlight to make its own food

c)

an organism that gets energy from eating dead organisms, non-living material or waste

54.
Which of the following is a way that humans could change/destroy an ecosystem?
a)
Mowing the grass
b)
Building a shopping center
c)
enjoying a picnic
d)
watching tv
55.
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. 
56.

What happens as you move higher in the energy pyramid?

a)

more organisms

b)

fewer organisms

c)

number of organisms does not change

d)

organisms die

57.

What are all the terms that can be used to describe the Orca whale? Check all that apply!

a)

Producer/Autotroph

b)

Consumer/Heterotroph

c)

Carnivore

d)

Top predator

e)

Primary Consumer

58.

How do you feel about the content that is going to be on CUA 5?

What score do you think you will get?

4 lines
59.

Which of the drawings above represents the climax community in this succession pattern?

a)

Q

b)

R

c)

S

d)

T

60.
Which of the following describes a population of fish, crabs, and sharks that live in the same area?
a)
Ecosystem
b)
Biome
c)
Biosphere
d)
Community

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