Phosphorus Cycle

Which of the following statements is true of the phosphorus cycle?

• Phosphorus enters the atmosphere as phosphates.

• The phosphorus cycle utilizes the processes of erosion, and weathering.

• Phosphates are used in carbohydrate and glucose storage.

• The phosphorus cycle utilizes bacteria to breakdown phosphates and make them available for plants.

What role do decomposers play in the phosphorous cycle?

• absorb phosphorous 

• release phosphorous into atmosphere

• return phosphorous into the soil

• combustion

Tags

NGSS.MS-LS2-3

This is NOT a part of the phosphorus cycle.

• Phosphate is incorporated into sedimentary rocks

• Phosphate bound to soil

• Atmospheric phosphate

• Phosphate is absorbed from the soil by plants

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

_____ brings phosphorous into our waterways. .

• Precipitation

• Runoff

• Transpiration

• Condensation

Tags

NGSS.MS-LS2-3

According to the diagram, the movement of phosphorus between biological organisms and soil is in a steady state in an undisturbed system. Which of the following best explains the reason for this steady movement?

• Phosphorus is taken up by plants during photosynthesis to create carbohydrates.

• A decrease in buffer zones prevents phosphorus runoff in waterways.

• There is a rapid influx of phosphorus from the weathering of rocks.

• Readily available organic phosphorus in the soil is assimilated by plants.

Tags

NGSS.MS-LS2-3

The major sink for phosphorus is

• sedimentary rock

• atmospheric gases

• seawater

• plants

Tags

NGSS.MS-LS2-3

In order to make a complete cycle for phosphorus, you need to make new rocks through heat, time, and pressure.

• TRUE

• FALSE

Tags

NGSS.MS-ESS2-1

What things add phosphorus to the soil? Check all that apply.

• Decomposition

• Erosion

• Excretion

• Lightning

• Respiration

Tags

NGSS.MS-LS2-3

Too much phosphorus in waterways (rivers, lakes) can lead to___________.

• eutrophication

• nothing

• decreased pH levels

• diseases

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

_____ brings phosphorous into our waterways. .

• precipitation

• runoff

• transpiration

• condensation

Tags

NGSS.MS-ESS2-4