The Nitrogen Cycle

How animals get the nitrogen they need

• from the air they breathe
• from the water they drink
• from the food they eat
• from the Sun

Tags

NGSS.MS-LS2-3

Organisms that need nitrogen to survive

• only plants
• only animals
• only bacteria
• all living organisms

Tags

NGSS.MS-LS2-1

Organisms that play a role in the nitrogen cycle

• only plants
• only animals
• only bacteria
• plants, animals, & bacteria

Tags

NGSS.MS-LS2-3

Bacteria fix nitrogen on plant roots. Plant roots provide sugar to bacteria. This is an example of

• mutualism
• parasitism
• commensalism
• competition

Tags

NGSS.MS-LS2-2

All plants have nitrogen fixing nodules on their roots.

• True
• False

Nitrogen rich fertilizers and manure can cause water pollution.

• True
• False

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

How nitrogen is "fixed" into useable form for plants

• only through action of bacteria
• only through lightning
• through action of bacteria & lightning
• through photosynthesis

Organism that breaks down dead plants & animals and releases nitrogen back into atmosphere

• bacteria
• plants
• animals
• producers

Tags

NGSS.MS-LS2-3

How 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

Gas that makes up almost 80% of Earth's atmosphere

• oxygen
• carbon dioxide
• nitrogen
• hydrogen