Nitrogen Cycle Quiz

What percent of the atmosphere is nitrogen?

• 25%

• 54%

• 78%

• 10%

How does Nitrogen reach soil?

• Nitrogen reaches the soil from the oceans

• Nitrogen reaches the soil from precipitation

• Nitrogen reaches the soil through cars

• Nitrogen reaches the soil from people

Tags

NGSS.MS-LS2-3

Plants and animals can readily use nitrogen gas

• True

• False

The process that Nitrogen goes through to be able to be used by plants and animals is called _________.

• Nitrification

• Nitrogen-Fixation

• Ammonification

• Denitrification

What helps the process of Nitrogen-Fixation?

• Special Bacteria

• Ammonia

• Precipitation

• Carbon Dioxide

Tags

NGSS.MS-LS2-3

Where can you find the special bacteria that helps in Nitrogen-Fixation?

• In Precipitation

• On the roots of plants

• In Carbon Dioxide

• In Fossil Fuels

Plants use ________ to make their own proteins

• Ammonia

• Nitrogen Gas

• Nitrates

• Carbon Dioxide

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Decomposers

• Change decaying matter and waste back into Nitrogen

• Change Nitrogen into ammonia

• Change precipitation

• Change plant proteins

Tags

NGSS.MS-LS2-3

Unused nitrates get changed back into ammonia and nitrogen gas. This process is called ________.

• Denitrification

• Ammonification

• Nitrogen-Fixation

• Nitrification

Tags

NGSS.MS-LS2-3

Choose the correct statement about ammonia.

• Ammonia is used by plants

• Ammonia is toxic

• Ammonia is the final step of the Nitrogen Cycle

• Ammonia helps plants make plant proteins

Tags

NGSS.MS-LS2-3