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Unit 5 Review

Total questions: 85

Worksheet time: 2hrs 15mins

Name
Class
Date
1.

Which of the following equations represents the overall chemical reaction for photosynthesis?

a)

6O2+ 6H2O → C6H12O6+ 6O2

b)

C6H12O6 + 6H2O→ 6O2+ 6O2

c)

6CO2+ 6H2O→ C6H12O6+ 6O2

d)

6O2 + 6H2O→ C6H12O6 + 6CO2

2.

Which lettered graph represents the affect of light intensity on photosynthetic rate?

a)

A

b)

B

c)

C

d)

D

3.

Which lettered graph represents the effect of temperature on photosynthetic rate?

a)

A

b)

B

c)

C

d)

D

4.

Explain how temperature affects the process of photosynthesis.

a)

Temperature affects the color of the leaves in photosynthesis.

b)

Temperature affects the amount of water available for photosynthesis.

c)

Temperature affects the size of the plant in photosynthesis.

d)

Temperature affects the rate of enzyme activity in photosynthesis.

5.

Explain how the concentration of carbon dioxide affects the rate of photosynthesis.

a)

The rate of photosynthesis increases with higher concentrations of carbon dioxide.

b)

The rate of photosynthesis is only affected by the concentration of water.

c)

The rate of photosynthesis is not affected by the concentration of carbon dioxide.

d)

The rate of photosynthesis decreases with higher concentrations of carbon dioxide.

6.

Which lettered graph represents the effect of carbon dioxide gas on photosynthetic rate?

a)

A

b)

B

c)

C

d)

D

7.
If carbon dioxide is completely removed from a plant’s environment, what would you expect to happen to the plant’s production of high-energy sugars (rate of photosynthesis)?
a)
Sugar production will likely increase.
b)
Sugars will not be produced.
c)
The rate of sugar production will decrease .
d)
Fewer sugars will be produced at first, but then the plant will recover.
8.
A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27°C. The gas being collected is probably ________.
a)
oxygen
b)
carbon dioxide
c)
ATP
d)
glucose
9.

The location in which photosynthesis takes place; uses light energy to make food(glucose)

a)

chloroplast

b)

vein

c)

stem

d)

roots

10.

the green pigment found inside the chloroplast in the cells of the leaves

a)

Chlorophyll

b)

Chlorine

c)

Stomata

d)

Food Coloring

11.

What two things are the product (end result) of photosynthesis?

a)

Oxygen

b)

Glucose

c)

Chloroplasts

d)

Carbon Dioxide

12.
Which of these conditions would decrease the rate of photosynthesis in a plant?
a)
Above average precipitation
b)
Changing the daylight hours from 14 hrs to 10 hrs
c)
Changing the CO2 concentration from 380 ppm to 410 ppm
d)
All of these choices
13.
What three things are needed for a plant to do photosynthesis?
a)
Glucose, Oxygen, Sunlight
b)
CO2, Oxygen, Sunlight
c)
CO2, Water, Sunlight
d)
Oxygen, Water, Sunlight
14.

What statement is true?

a)

CO2 levels in ecosystems increase during the day, because more photosynthesis is occurring.

b)

CO2 levels in ecosystems decrease during the day, because more photosynthesis is occurring.

c)

CO2 levels in ecosystems decrease during the day, because less photosynthesis is occurring.

d)

CO2 levels in ecosystems increase during the day, because less photosynthesis is occurring.

15.

What statement is true?

a)

O2 levels in ecosystems increase during the day, because more photosynthesis is occurring.

b)

O2 levels in ecosystems increase during the day, because less photosynthesis is occurring.

c)

O2 levels in ecosystems decrease during the day, because more photosynthesis is occurring

d)

O2 levels in ecosystems decrease during the day, because less photosynthesis is occurring.

16.

What goes at letter A?

a)

light

b)

light reactions

c)

Calvin cycle

d)

photosynthesis

17.

What goes at letter K?

a)

oxygen

b)

water

c)

carbon dioxide

d)

sugars

18.

What goes at letter C?

a)

oxygen

b)

water

c)

carbon dioxide

d)

sugars

19.

What goes at letter B?

a)

oxygen

b)

water

c)

carbon dioxide

d)

sugars

20.

What goes at letter L?

a)

oxygen

b)

water

c)

carbon dioxide

d)

sugars

21.

Which of the following processes does NOT move carbon to the atmosphere?

a)

Animal respiration (Breathing)

b)

Volcanic eruption

c)

Photosynthesis

d)

Burning fossil fuels

22.
Which one of these does not add CO2 to the atmosphere?
a)
cooking with gas
b)
planting trees
c)
burning wood
d)
riding in a bus
23.

Why is burning fossil fuels harmful?

a)

they cause cancer

b)

They can get extremely hot

c)

it increases the amount of carbon dioxide in the atmosphere

d)

this would destroy fossils

24.
The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?
a)
lower levels of ozone in the atmosphere
b)
lower levels of nitrogen in the atmosphere
c)
higher levels of carbon dioxide and other greenhouse gases in the atmosphere
d)
higher levels of oxygen in the atmosphere
25.

Which is an example of a carbon sink?

a)
b)
c)
d)
26.
How do living organisms return carbon to the atmosphere in the carbon cycle?
a)
respiration and photosynthesis
b)
 decomposition and respiration
27.
What does NOT produce carbon dioxide?
a)
Photosynthesis
b)
Burning Fossil Fuels
c)
Animal respiration
d)
Plants decaying
28.

If the plant population decreased, the amount of carbon dioxide in the atmosphere would _________.

a)

Stay the same

b)

Increase

c)

Decrease

29.
An ecosystem is a community of organisms interacting with their physical environment. Why are decomposers an important part of ecosystems?
a)
They break down dead organisms to return nutrients to the soil.
b)
They produce their own food for survival.
c)
They play a role in preventing weathering and erosion.
d)
They provide most of the energy to consumers.
30.
Which best describes how decomposers help support life in an ecosystem?
a)
Decomposers add nutrients to the soil.
b)
Decomposers provide a habitat in the ecosystem.
c)
Decomposers add producers to the ecosystem.
d)
Decomposers provide energy for consumers.
31.

Too much phosphorus in waterways (rivers, lakes) can lead to___________.

a)

eutrophication

b)

Nothing

c)

Death

d)

diseases

32.

In general, algal blooms occur when

a)

toxins accumulate in shellfish.

b)

nutrients decrease in the water.

c)

nutrients increase in the water.

33.
_____ brings phosphorous into our waterways. .
a)
precipitation
b)

water runoff

c)
transpiration
d)
condensation
34.

What converts nitrogen gas into a usable form for plants and animals?

a)

bacteria

b)

rain

c)

fungi

d)

car exhaust

35.

Where can nitrogen fixing bacteria be found (2 right answers)

a)

Free living in the soil

b)

under the leaves of flowering plants

c)

in the atmosphere

d)

living on the nodules of certain plants

36.

What is the role of decomposing bacteria in the nitrogen cycle?

a)

change Nitrogen gas into Nitrate

b)

Return the nitrogen compounds to the soil

c)

Turn nitrogen into water

d)

Turn nitrate into nitrogen gas

37.
How do plants get the nitrogen they need?
a)
from the air
b)
from the soil or water in which they live
c)
from the Sun
d)
from broken-down rocks
38.
What follows evaporation during the water cycle? 
a)
Water evaporates into water vapor
b)
Water vapor condenses and forms a  cloud
c)
Water precipitates to the ground
d)
Water runs down into the hydrosphere
39.
The map shows the location of South Carolina. South Carolina is humid during the summer months. Which of the following is the most likely cause of the humid conditions?
a)
runoff from inland mountains
b)

flooding from rivers and streams
c)
groundwater bubbling to the surface
d)
evaporation from the surface of the ocean
40.
During which stage do clouds form?
a)
condensation
b)
evaporation
c)
precipitation
41.
The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain members of the plant kingdom?
a)
A
b)
B
c)
C
d)
D
42.
Which organism recieves the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
43.
The largest group of organisms found in a food web would be:
a)
Primary Consumers
b)
Producers
c)
Decomposers
d)
Tertiary Consumers
44.
The efficiency of energy transfer from a lower trophic level to the next highest level is roughly
a)
1%
b)
10%
c)
100%
d)
1000%
45.

If there are 100 Kcal of energy available in the producers, how much energy would be available in the primary consumers?

a)

10 Kcal

b)

1 Kcal

c)

100 Kcal

d)

1000 Kcal

46.
In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?
a)
80%
b)
90%
c)
10%
d)
20%
47.
A food pyramid represent the relative amount of energy in trophic levels. Which of the following correctly shows a food pyramid?
a)
A
b)
B
c)
C
d)
D
48.

As you work your way up the energy pyramid, what happens to the energy?

a)

It increases

b)

It decreases

c)

It stays the same

d)

Nothing

49.

What is an Abiotic Factor?

a)

A NON-living factor that can affect an ecosystem

b)

A living factor that can affect an ecosystem

c)

The carrying capacity of an ecosystem

50.

What is a Biotic Factor?

a)

The carrying capacity of an ecosystem

b)

A NON-living factor that can affect an ecosystem

c)

A living factor that can affect an ecosystem

51.

What is a limiting factor?

a)

Factors that always increase a population

b)

Factors that always decrease a population

c)

Resources that are unlimited

d)

Factors/resources that limit how many organisms can live in an area at the same time

52.

Name the type of limiting factor and type of relationship

Since lynx prey on hares, an increase in the hare population causes an increase in the lynx population.

a)

Density-Dependent: Parasitism

b)

Density-Independent: Competition

c)

Density-Dependent: Predator-Prey

d)

Density-Independent: Predator-Prey

53.

A severe flood in the Red River Valley causes a decline in the deer population. What type of limiting factor does the flood represent?

a)

Density-Dependent

b)

Density-Independent

54.

Due to stress from lack of space, large numbers of female lemmings miscarry their young and fail to reproduce.

a)

Density-Dependent

b)

Density-Independent

55.

Many fish die due to a change in the winds and the appearance of the El Nino ocean current off the coast of Peru and Chile.

a)

Density-Dependent

b)

Density-Independent

56.
Which of the following is a density-independent limiting factor?
a)
natural disaster
b)
predation
c)
disease
d)
parasitism
57.
What is the carrying capacity of the following graph?
a)
1000
b)
8000
c)
800
d)
600
58.

Which of the following is a density-dependent limiting factor?

a)

human activities

b)

unusual weather

c)

competition

d)

natural disaster

59.

Which of the following are density dependent factors?

a)

competition for resources

b)

predation

c)

disease

d)

natural disasters

60.

Which statement best describes the predator-prey relationship displayed on this graph?

a)

There is no relationship between the predator and prey.

b)

When the prey population increases, the predator population decreases.

c)

When the prey population increases, the predator population increases.

d)

when the predator population increases, the prey population increases.

61.

What type of growth is demonstrated in the graph?

a)

Exponential

b)

Carrying capacity

c)

Linear

d)

Negative

62.

What is the carrying capacity of the graph?

a)

around 500

b)

more than 800

c)

less than 300

d)

around 700

63.

What is the carrying capacity for this sheep population?

a)

2.0 million

b)

1.6 million

c)

1.0 million

d)

0.5 million

64.

Which two things increase a population size

a)

Birth and emigration

b)

Death and immigration

c)

Birth and Immigration

d)

Death and emigration

65.

Which two things decrease a population size?

a)

Birth and emigration

b)

Death and immigration

c)

Birth and immigration

d)

Death and emigration

66.

Using the food web what would happen if the eagle became extinct?

a)

The frog population would decrease.

b)

The frog population would increase.

c)

The butterfly population would increase.

d)

The snake population would decrease.

67.

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.

68.
What might happen if you remove a primary consumer from the ecosystem?
a)
There would be more food for secondary consumers.
b)
The number of primary consumers would increase.
c)
The number of plants would increase.
d)
The number of secondary consumers would increase.
69.

What is a stable ecological community that has reached equilibrium called? This ecosystem will have a high amount of biodiversity.

a)

ecological succession

b)

climax community

c)

secondary succession

d)

pioneer species

70.

What type of succession occurs after an event like a forest fire?

a)

primary succession

b)

secondary succession

c)

both

71.

What process starts with bare/barren rock followed by lichen?

a)

primary succession

b)

secondary succession

c)

both types of succession

72.

Which would result in primary succession?

a)

Volcano destroying habitat leaving only soil and ash

b)

Tornado destroying a crop leaving very little soil

c)

Glacier retreating exposing bare rock

d)

Hurricane knocking down trees and power lines

73.

Which statement is true?

a)

Primary succession starts with NO soil, Secondary succession starts WITH soil

b)

Primary succession starts WITH soil, Secondary succession starts with no soil

74.

Natural disasters such as fires, flooding and tornadoes are linked to ________________.

a)

primary

b)

secondary

c)

old field

d)

ecosystem

75.
The picture shows what type of succession?
a)
primary
b)
secondary
c)
tertiary
d)
quadanary
76.
What type of succession is shown going from figure A to figure B?
a)
primary succession
b)
eutrophication
c)
secondary succession
d)
intermediate
77.
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
78.
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
79.
Final illustration (#8) shows
a)
pioneer species
b)
climax community
c)
only biotic factors
d)
only abiotic factors
80.
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
81.
the process by which a new community forms where no community lived before 
a)
resource
b)
invasive (non- native) species
c)
primary succession
d)
competition
82.
What are examples of pioneer species in a primary succession?
a)
Bushes and Shrubs
b)
Oak trees
c)
Mossess and Lichens 
d)
A rose Bush
83.
The picture shows what type of succession?
a)
primary
b)
secondary
c)
tertiary
d)
quadanary
84.

The sequence A through E represents stages of ecological succession. Which diagram(s) shows the pioneer species

a)

A & B

b)

B & C

c)

C & D

d)

D & E

85.

1. Biomass is the amount of living material present in an environment. Biodiversity refers to the variety of living things that are present in an ecosystem. Which of the following would you expect to occur over time as ecological succession moves forward?

a)

increases in both biomass and biodiversity

b)

decreases in both biomass and biodiversity

c)

increases in biomass, but decreases in biodiversity

d)

decreases in biomass, but increases in biodiversity

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