NITROGEN CYCLE

Which process converts atmospheric nitrogen into a form usable by plants?

• DENITRIFICATION

• NITROGEN FIXING BACTERIA

• NITRIFICATION

• AMMONIFICATION

Tags

NGSS.MS-LS2-3

Pick 2 ways that nitrogen in the atmosphere enters the soil.

• sunlight

• wind

• snow

• rain

Tags

NGSS.MS-LS2-3

What process of the nitrogen cycle occurs in the roots of plants?

• Denitrification

• Nitrogen fixation

• Photosynthesis

• Cellular Respiration

How much of the atmosphere is composed of nitrogen gas?

• 87%
• 38%
• 78%
• 21%

The process that allows organisms to use nitrogen

• assimilation

• denitrification

• fixation

• ammonification

Tags

NGSS.MS-LS2-3

The nitrogen cycle includes ___________. (Pick 3)

• the atmosphere

• the sun

• the animals

• the soil

Tags

NGSS.MS-LS2-3

According to this diagram, plants absorb

• nitrates

• nitrogen fixing bacteria

• animals

• decomposers

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

Animals get nitrogen by ____________.

• breathing air

• eating plants

• dying

• being struck by lightning

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

_____________ bacteria change the nitrates back into nitrogen gas that is then released back into the atmosphere.

• Denitrifying

• Nitrogen fixing

• Ammonifying

• Phagocytotic

Tags

NGSS.MS-LS2-3

A correct path that nitrogen could take would be

• air -> animals -> plants -> bacteria

• animals -> air -> bacteria -> plants

• bacteria -> air -> plants -> animals

• air -> bacteria -> plants -> animals

Tags

NGSS.MS-LS2-3