Soil and Plant Growth Quiz

What roles does soil provide in supporting plant growth and the environment?

• Provides nutrients and water

• Supports root structure

• Regulates temperature

• All of the above

Which of the following is a macronutrient essential in large quantities for plant growth?

• Nitrogen

• Iron

• Zinc

• Copper

Which of the following is a micronutrient needed in smaller quantities for plant growth?

• Phosphorus

• Calcium

• Magnesium

• Manganese

How does soil influence climate?

• By affecting the carbon cycle

• By influencing weather patterns

• By regulating temperature

• All of the above

What role does soil play in the ecology of the planet?

• Supports plant growth

• Regulates water

• Recycles nutrients

• All of the above

What does the term "soils" refer to?

• The upper layer of earth in which plants grow

• A type of rock

• A body of water

• A type of weather phenomenon

Soil formation is influenced by:

• Climate

• Parent material

• Topography

• All of the above

Which of the following is NOT one of the three primary soil horizons?

• O horizon

• A horizon

• B horizon

• C horizon

The "plow layer" in soil is:

• The top layer of soil that is turned over by a plow

• A layer of soil rich in organic matter

• The deepest layer of soil

• A layer of soil that is never disturbed

Soil near bedrock is less developed because:

• It is closer to the Earth's core

• It has less organic material

• It is more exposed to weathering

• It is richer in minerals