Nitrogen Cycle

How much of the atmosphere is composed of nitrogen gas?

• 87%
• 38%
• 78%
• 21%

Tags

NGSS.MS-PS1-1

How do plants get the nitrogen they need?

• from the air
• from the soil or water in which they live
• from the Sun
• from broken-down rocks

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Nitrogen fixing bacteria, lives in nodules on the root of a plant called

• Broccoli
• Legumes
• Beats
• Carrots

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

The swelling on the roots of a soybean are called

• Noodles
• Nitrogen
• Nodules
• Legumes

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What converts some atmospheric nitrogen into nitrates that organisms can use?

• Sun
• Rain
• Thunder
• Lighting

Which of the following describes the role of nitrogen-fixing bacteria in the nitrogen cycle? Nitrogen-fixing bacteria convert

• nitrates intro nitrogen gas
• ammonia into proteins
• nitrogen gas into ammonia
• proteins into nitrates

Tags

NGSS.MS-LS2-3

Animals obtain the nitrogen they need directly from the

• soil in their habitat
• air they breathe
• plants they eat
• bacteria living within them

Tags

NGSS.5-LS2-1

Growing legumes such as alfalfa or soy beans increases

• denitrification
• nitrogen fixation
• ammonification
• ammonium oxidation

Tags

NGSS.MS-LS2-3

A particular golf course is using large amounts of nitrogen fertilizer. What process could move this nitrogen into a local stream?

• volatilization
• nitrogen fixation
• runoff
• ammonification

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-3

Nitrogen is the most plentiful gas in the atmosphere.

• True
• False