carbon dioxide
oxygen
carbon dioxide
Life Boot Camp
5.9D
Identify the significance of the carbon
dioxide-oxygen cycle to the survival of
plants and animals.
STAAR 2013 #42; RC 4; Supporting
1. Many types of plants grow in a forest ecosystem.
How do plants affect the air that forest animals
breathe?
F. Plants use oxygen from the air to make food.
G. Plants release pollution into the air.
H. Plants release energy from the sun into the air.
J. Plants take in carbon dioxide and release oxygen into
the air.
STAAR 2013 #42; RC 4; Supporting
1. Many types of plants grow in a forest ecosystem.
How do plants affect the air that forest animals
breathe?
F. Plants use oxygen from the air to make food.
G. Plants release pollution into the air.
H. Plants release energy from the sun into the air.
J. Plants take in carbon dioxide and release oxygen into
the air.
TAKS 2003—#19 (56%)
2. Which gas in the air would increase if a large
number of trees were cut down?
A
B
C
D
Carbon dioxide
Nitrogen
Oxygen
Water vapor
TAKS 2003—#19 (56%)
2. Which gas in the air would increase if a large
number of trees were cut down?
A
B
C
D
Carbon dioxide
Nitrogen
Oxygen
Water vapor
3. Which process is illustrated in the following system?
Food Production in Plants
Energy (sunlight)
Oxygen
Carbon Dioxide
Water
A
B
C
D
The Nitrogen Cycle
Photosynthesis
Phototropism
The Water Cycle
3. Which process is illustrated in the following system?
Food Production in Plants
Energy (sunlight)
Oxygen
Carbon Dioxide
Water
A
B
C
D
The Nitrogen Cycle
Photosynthesis
Phototropism
The Water Cycle
4. During which of the following processes does
a plant use sunlight to produce its own food?
A
B
C
D
Migration
Hibernation
Metamorphosis
Photosynthesis
4. During which of the following processes does
a plant use sunlight to produce its own food?
A
B
C
D
Migration
Hibernation
Metamorphosis
Photosynthesis
5. Which of the following gases do plants use in
photosynthesis?
A
B
C
D
Hydrogen
Oxygen
Carbon dioxide
Carbon monoxide
5. Which of the following gases do plants use in
photosynthesis?
A
B
C
D
Hydrogen
Oxygen
Carbon dioxide
Carbon monoxide
6. Which gas is given off by plants during the carbon
dioxide/oxygen cycle?
A
B
C
D
Hydrogen
Nitrogen
Oxygen
Helium
6. Which gas is given off by plants during the carbon
dioxide/oxygen cycle?
A
B
C
D
Hydrogen
Nitrogen
Oxygen
Helium
7. What effect might large forest fires have on the air in
that general area?
A The levels of gases in the air increase.
B Carbon dioxide levels increase while oxygen levels
decrease.
C Carbon dioxide levels decrease while oxygen levels
increase.
D Levels of oxygen and carbon dioxide remain the
same.
7. What effect might large forest fires have on the air in
that general area?
A The levels of gases in the air increase.
B Carbon dioxide levels increase while oxygen levels
decrease.
C Carbon dioxide levels decrease while oxygen levels
increase.
D Levels of oxygen and carbon dioxide remain the
same.
8. Plants use different compounds to complete the
process of photosynthesis. What gas do plants give off
as a waste product during photosynthesis?
A
B
C
D
Carbon dioxide
Nitrogen
Oxygen
Water
8. Plants use different compounds to complete the
process of photosynthesis. What gas do plants give off
as a waste product during photosynthesis?
A
B
C
D
Carbon dioxide
Nitrogen
Oxygen
Water
9. An increase in the average
level of carbon dioxide in the
atmosphere is most likely
caused by an increase in the —
A extinctions of animals
B plant life on Earth
C number of large forest fires
D number of solar-powered
homes
9. An increase in the average
level of carbon dioxide in the
atmosphere is most likely
caused by an increase in the —
A extinctions of animals
B plant life on Earth
C number of large forest fires
D number of solar-powered
homes
10. Plants use sunlight and take in carbon dioxide
from the air and water from the environment to
make food. In this process, they release oxygen
back into the environment. How is this important
to the survival of other living things?
A
B
C
D
Plants use this oxygen to make water.
People need this oxygen to make electricity.
Animals use oxygen for food.
Living things need oxygen for respiration.
10. Plants use sunlight and take in carbon dioxide
from the air and water from the environment to
make food. In this process, they release oxygen
back into the environment. How is this important
to the survival of other living things?
A
B
C
D
Plants use this oxygen to make water.
People need this oxygen to make electricity.
Animals use oxygen for food.
Living things need oxygen for respiration.
11. Green plants are important to animals because
the plants—
A
B
C
D
consume food and give off oxygen
consume food and give off carbon dioxide
produce food and give off oxygen
produce food and give off carbon dioxide
11. Green plants are important to animals because
the plants—
A
B
C
D
consume food and give off oxygen
consume food and give off carbon dioxide
produce food and give off oxygen
produce food and give off carbon dioxide
12. In an ecosystem, which group of organisms
puts a large amount of oxygen into the air?
A
B
C
D
Animals
Bacteria
Fungi
Plants
12. In an ecosystem, which group of organisms
puts a large amount of oxygen into the air?
A
B
C
D
Animals
Bacteria
Fungi
Plants
13. In a forest, how do decomposers help other organisms
survive?
A
B
C
D
They release oxygen into the air that animals breathe.
They put nutrients into the soil that plants use to grow.
They provide shelter in forests where animals can hide.
They use sunlight to make food for plants and animals.
13. In a forest, how do decomposers help other organisms
survive?
A
B
C
D
They release oxygen into the air that animals breathe.
They put nutrients into the soil that plants use to grow.
They provide shelter in forests where animals can hide.
They use sunlight to make food for plants and animals.
14. Which gas is given off by plants in the carbon
cycle?
A
B
C
D
Hydrogen
Nitrogen
Oxygen
Helium
14. Which gas is given off by plants in the carbon
cycle?
A
B
C
D
Hydrogen
Nitrogen
Oxygen
Helium
15. Where do the consumers in the carbon cycle
get the carbon compound that they need for
survival?
A
B
C
D
From decomposers
From eating plants
From the soil
From carbon dioxide in the air
15. Where do the consumers in the carbon cycle
get the carbon compound that they need for
survival?
A
B
C
D
From decomposers
From eating plants
From the soil
From carbon dioxide in the air
16. Carbon dioxide is used by—
A
B
C
D
animals during respiration
animals, plants, and fungi during respiration
plants during photosynthesis
plants and fungi during transpiration
16. Carbon dioxide is used by—
A
B
C
D
animals during respiration
animals, plants, and fungi during respiration
plants during photosynthesis
plants and fungi during transpiration
18. Living plants and fish are shown in the aquarium. These
plants are providing the fish with—
A
B
C
D
water
light
oxygen
carbon dioxide
18. Living plants and fish are shown in the aquarium. These
plants are providing the fish with—
A
B
C
D
water
light
oxygen
carbon dioxide
19. Plants take in carbon dioxide gas and use it to make sugars.
Through this process, they release oxygen, which animals need.
Which of the following activities could increase the amount of
oxygen released into the air?
A
B
C
D
Replacing every tree that is cut down with two new trees
Clearing plants to build parking lots, homes, and malls
Supporting population growth in plant-eating animals
Setting stronger air pollution standards.
19. Plants take in carbon dioxide gas and use it to make sugars.
Through this process, they release oxygen, which animals need.
Which of the following activities could increase the amount of
oxygen released into the air?
A
B
C
D
Replacing every tree that is cut down with two new trees
Clearing plants to build parking lots, homes, and malls
Supporting population growth in plant-eating animals
Setting stronger air pollution standards.
20. Which part of the carbon cycle is responsible for
providing food to eat and oxygen to breathe for
animals?
A
B
C
D
Evaporation
Migration
Photosynthesis
Respiration
20. Which part of the carbon cycle is responsible for
providing food to eat and oxygen to breathe for
animals?
A
B
C
D
Evaporation
Migration
Photosynthesis
Respiration
21. The picture illustrates the
process by which plants use
sunlight, water, and carbon
dioxide to make sugar. Oxygen
and water are given off in the
process as waste products.
The process by which plants
make their own food is
called—
A
B
C
D
transpiration
osmosis
photosynthesis
respiration
21. The picture illustrates the
process by which plants use
sunlight, water, and carbon
dioxide to make sugar. Oxygen
and water are given off in the
process as waste products.
The process by which plants
make their own food is
called—
A
B
C
D
transpiration
osmosis
photosynthesis
respiration
22. What do plants give off as a waste product
during photosynthesis?
A
B
C
D
Carbon dioxide
Nitrogen
Oxygen
Water
22. What do plants give off as a waste product
during photosynthesis?
A
B
C
D
Carbon dioxide
Nitrogen
Oxygen
Water
23. In the picture above, what gas is being released by the plant
into the test tube?
A
B
C
D
Carbon dioxide
Hydrogen
Oxygen
Nitrogen
23. In the picture above, what gas is being released by the plant
into the test tube?
A
B
C
D
Carbon dioxide
Hydrogen
Oxygen
Nitrogen
24. In the diagram above, what is represented by the Z?
A
B
C
D
Carbon Dioxide
Water
Minerals
Oxygen
24. In the diagram above, what is represented by the Z?
A
B
C
D
Carbon Dioxide
Water
Minerals
Oxygen