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Cycles in nature and Respiration

Total questions: 20

Worksheet time: 18mins

Name
Class
Date
1.

In the cycle “B” and “C” represents the process of :

a)

Consumption

b)

Respiration

c)

Photosynthesis

d)

Perspiration

2.

Which cycle involves condensation, evaporation, and precipitation?

a)

The water cycle

b)

The carbon cycle

c)

The nitrogen cycle

d)

The motor cycle

3.
All of the carbon in existence is continually recycled in the carbon cycle
a)
True
b)
False
4.

The process in which nitrogen circulates and is recycled is called

a)

The nitrogen cycle

b)

The carbon cycle

c)

The water cycle

d)

The phosphorus cycle

5.
Where is carbon stored in the environment?
a)
Fossil fuels
b)
Wood of trees
c)
Calcium carbonate (shells and bones)
d)
All of the above
6.

What is the largest reservoir for water?

a)

the ocean

b)

rocks and minerals

c)

the atmosphere

d)

glaciers

7.
Carbon dioxide is added to the atmosphere by
a)
Burning fossil fuels 
b)
Cellular respiration
c)
Decomposing organic matter
d)
All answers are correct
8.

Which of the following is represented in this picture?

a)

the water cycle

b)

the carbon cycle

c)

the nitrogen cycle

d)

the hydrogen cycle

9.

Which of the following is represented in this picture?

a)

the water cycle

b)

the carbon cycle

c)

the nitrogen cycle

d)

the hydrogen cycle

10.

Animals use O2 in the process of _____ to make more CO2

a)

photosynthesis

b)

fermentation

c)

cellular respiration

d)

decomposition

11.

How does carbon dioxide leave the atmosphere and become part of the food chain?

a)

through transpiration

b)

through photosynthesis

c)

through factory emission

d)

sunlight

12.

What role do animals play in the carbon cycle?

a)

absorb carbon dioxide from the atmosphere

b)

give off carbon dioxide through respiration

c)

combustion

d)

decomposing matter

13.

Label the parts of the water cycle

14.

Which organism go through cellular respiration?

a)

animals

b)

plants

c)

both animals and plants

d)

none

15.

Which equation represents Cellular Respiration

a)

b)

c)

d)

16.

Which of the following is a reactant Cellular Respiration?

a)

Oxygen

b)

Carbon Dioxide

c)

Water

d)

Sunlight

17.

Which of the following are the reactants of respiration?

a)

O2 + CO2

b)

H2O + Glucose

c)

Glucose + O2

d)

H2O + CO2 + Sunlight

18.

Which of the following are the products of respiration?

a)

O2 + Glucose + ATP

b)

Glucose + Sunlight + CO2

c)

CO2 + H2O + ATP

d)

CO2 + H2O + Sunlight

19.

Which process in the water cycle involves water vapor cooling and changing back into liquid form?

a)

Evaporation

b)

Condensation

c)

Precipitation

d)

Transpiration

20.

Which of the following processes releases carbon dioxide into the atmosphere?

a)

Photosynthesis

b)

Cellular respiration

c)

Condensation

d)

Transpiration