Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Carbon Cycle

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Plant process that converts carbon dioxide into carbohydrates.

a)

Photosynthesis

b)

Carbon Fixation

c)

Cellular Respiration

d)

Condensation

2.

Converting inorganic carbon into organic carbon .

a)

Combustion

b)

Producer

c)

Carbon Fixation

d)

Carbon Cycle

3.

The process of burning fuels that releases carbon dioxide into the atmosphere

a)

Combustion

b)

Carbon Cycle

c)

Nitrogen Cycle

d)

Phosphorus Cycle

4.

The process of living organisms that uses carbohydrates and releases carbon dioxide

a)

Photosynthesis

b)

Cellular Respiration

c)

Global Warming

d)

Nitrogen fixation

5.

Sugar made by plants

a)

Lipids

b)

Proteins

c)

Nucleic Acids

d)

Carbohydrates

6.

Which of the following is the most important reason that recycling of carbon is essential to living organisms?

a)

Caron is needed in the soil.

b)

Carbon is needed for fuel combustion.

c)

Carbon is needed to make organic molecules.

d)

Carbon is needed make coal.

7.

Through with process do living organisms release carbon into the atmosphere?

a)

Photosynthesis

b)

Transpiration

c)

Cellular Respiration

d)

Combustion

8.

A decrease in atmosphere carbon dioxide would cause the most direct decrease in which of the following in an ecosystem?

a)

Consumers

b)

Producers

c)

decomposers

d)

Heterotrophs

9.

How does carbon enter the soil?

a)

Through dead organisms

b)

Through Cellular Respiration

c)

Through Photosynthesis

d)

Through global warming

10.

How do animals obtain carbon to be used in cellular processes?

a)

By breathing CO2

b)

By Photosynthesis

c)

By eating plants or other animals

d)

By carbon fixation