Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
CO2 Cycle
Test Description: 5.9D
Instructions: Answer all questions to get your test result.
1) Which component do animals add to the atmosphere when they breathe?
A
Nitrogen
B
Hydrogen
C
Oxygen
D
Carbon dioxide
2) When plants make their own food, they add what gas to the atmosphere?
A
Hydrogen
B
Nitrogen
C
Oxygen
D
Carbon dioxide
3) Plants are important to all animals, even animals that eat only meat, because plants provide a resource animals need for -
A
protection
B
reproduction
C
drinking
D
breathing
4) Plants and animals that live on land exchange carbon dioxide and oxygen through the –
A
atmosphere
B
food chain
C
ocean
D
soil
5) What gas would eventually decrease if a large number of plants in a forest habitat were removed?
A
Oxygen
B
Nitrogen
C
Carbon dioxide
D
Hydrogen
6) Plants play a role in the carbon dioxide and oxygen cycle when they absorb -
A
oxygen and give off carbon dioxide
B
carbon dioxide and give off oxygen
C
hydrogen and give off oxygen
D
hydrogen and give off carbon dioxide
7) Carbon dioxide is a gas found in the Earth’s atmosphere. Animals expel carbon dioxide into the atmosphere as part of -
A
reproduction
B
feeding
C
growth
D
respiration
8) What resource, given off by plants as their contribution to the carbon dioxide-oxygen cycle, is necessary for the survival of animals?
A
Carbon dioxide
B
Water
C
Oxygen
D
Sunlight
9) Plants are important to the survival of animals because plants –
A
grow upwards in order to collect sunlight
B
take in water and nutrients through their roots
C
sometimes use the wind to spread their seeds
D
produce oxygen and add it to the atmosphere
10) Huge areas of the Amazon Rainforest are being cut down. What effect could this have on the carbon-dioxide and oxygen cycle if the removal of so many plants and trees continues?
A
Carbon dioxide levels decrease
B
Carbon dioxide levels increase
C
Nitrogen levels decrease
D
Oxygen levels increase
11) The carbon dioxide-oxygen cycle is important to animals because it provides –
A
fresh water for their survival
B
chemicals that build bones
C
energy they need to move
D
a gas they take in when breathing
12) Which of the following could increase the amount of oxygen in the air?
A
Paving more streets
B
Building more houses
C
Planting more trees
D
Burning more oil
13) To give up one thing and replace it with another
A
Photosynthesis
B
A. Carbon dioxide
C
Exchange
D
Oxygen
14) A gas released into the air by plants
A
Photosynthesis
B
Exchange
C
Oxygen
D
Carbon dioxide
15) A gas released into the air by animals
A
Photosynthesis
B
Carbon dioxide
C
Oxygen
D
Exchange
16) A set of events that occurs over and over again
A
Cycle
B
Exchange
C
Photosynthesis
D
Oxygen
17) The process by which plants make their own sugar for food
A
Oxygen
B
Exchange
C
Photosynthesis
D
Carbon dioxide
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?