Agriculture Systems Test

What type of soil has the highest water holding capacity?

• Sand

• Silt

• Clay

• All hold water equally.

Tags

NGSS.HS-ESS2-5

What is the LD-50?

• 10 mg/kg

• 20 mg/kg

• 100 mg/kg

• 200 mg/kg

Which element is considered a limiting factor?

• Nitrogen

• Phosphorus

• Carbon

• Water

Answer explanation

Phosphorus forms insoluble compounds, and is not usable in many

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the largest reservoir of nitrogen?

• Atmosphere

• Rocks

• Vegetation

What is the largest reservoir for phosphorus?

• Atmosphere

• Vegetation

• Rocks

Where does carbon for plants come from?

• Plants do not need carbon

• Runoff

• Atmosphere

• Soil

Tags

NGSS.HS-LS2-5

Which of the following is NOT an impact the humans have on the Nitrogen cycle?

• Tilling topsoil during harvesting

• Adding Nitrates to soil

• Mining

Tags

NGSS.HS-ESS3-1

What horizon has the most organic matter?

• O

• A

• B

• R

Tags

NGSS.MS-LS2-1

Which of the following is an example of biological control of aphids on bean plants?

• Releasing lady bugs

• Spraying plants with oil

• Spraying plants with organic componds

Tags

NGSS.HS-LS2-7

Which of the following is true of persistent organic pollutants?

• POPs are not organic so animals cannot break them down.

• POPs accumulate in body fat

• POPs can only be ingested by animals

• POPs can travel far

Tags

NGSS.HS-LS2-7