Evaporation and Transpiration Quiz

What is evaporation?

• The process during which a liquid changes into gas.

• The process by which water vapour leaves the living plant body.

• The quantity of water transpired by the plants.

• The theoretical amount of moisture that could be lost.

What are the essential requirements in the process of evaporation?

• The source of energy to vaporize the liquid water.

• The presence of gradient of concentration between the evaporating surface and the surrounding air.

• Both of the above.

• None of the above.

What is transpiration?

• The process during which a liquid changes into gas.

• The process by which water vapour leaves the living plant body.

• The quantity of water transpired by the plants.

• The theoretical amount of moisture that could be lost.

What is evapotranspiration (ET)?

• The quantity of water transpired by the plants during their growth.

• The theoretical amount of moisture that could be lost.

• The actual amount of water lost due to evapotranspiration.

• The amount of water lost by evaporation only.

What is potential evapotranspiration (PET)?

• Theoretical amount of moisture that could be lost from the surface to the atmosphere.

• Actual amount of water lost due to evapotranspiration.

• The quantity of water transpired by the plants.

• None of the above.

What is effective evapotranspiration (EET)?

• Theoretical amount of moisture that could be lost.

• Actual amount of water lost due to evapotranspiration.

• The quantity of water transpired by the plants.

• None of the above.

What is the formula for calculating evapotranspiration?

• ET = P + (I - D) + S

• ET = P - Q - S - ΔD

• ET = ETo × KC × E pan

• None of the above.

What factors affect the rate of evapotranspiration?

• Energy availability

• Humidity gradient

• Water availability

• All of the above

What is the role of soil moisture in evapotranspiration?

• It provides the necessary water for plants to transpire.

• It has no effect on evapotranspiration.

• It only affects evaporation, not transpiration.

• It increases the rate of evaporation only.

How does temperature influence evapotranspiration rates?

• Higher temperatures generally increase evapotranspiration rates.

• Temperature has no impact on evapotranspiration.

• Lower temperatures increase evapotranspiration rates.

• Temperature only affects evaporation, not transpiration.