Lab 7B Review

Water always flows from _____ to _______ concentration.

• higher to lower

• lower to higher

Stomata opening is regulated by... (multiple answers may apply)

• Leaf and air temperatures

  
  

• 1. Light

• 1. Air humidity 

• 1. Wind

• 1. Water supply to the leaf

The primary resistances to flow from leaf to air are: (multiple answers may apply)

• 1. Cuticle

• 1. Stomatal opening

• 1. Boundary layer

• Leaf arrangement type

• Inflorescence type

Which factor is most effective at stopping transpiration?

• Light

• Mist

• Wind

Which factor is most effective at increasing transpiration?

• Light

• Mist

• Wind

Why did the dye not reach as far in the celery that was placed on the bench and not immediately in the water?

• Random chance

• Stalk on bench had its water transport disrupted

• They may have been cut differently cause slight differences

How does light influence water movement? (multiple answers may be correct)

• Light stimulates stomatal opening, allowing water vapor to easily leave the leaf.

• Light also speeds up transpiration by warming the leaf.

• Light stimulates stomata to close, stopping water vapor from leaving the leaf.

• Light also slows down transpiration by warming the leaf.

How does wind influence water movement? (multiple answers may be correct)

• Increased movement of the air around a plant (wind) will result in a higher transpiration rate.

• Wind will move the air around, with the result that the more saturated air close to the leaf is replaced by drier air.

• Increased movement of the air around a plant (wind) will result in a lower transpiration rate.

• Wind will move the air around, with the result that the more drier air close to the leaf is replaced by saturated air.

What happens when a carrot is put into distilled water?

• Water leaves carrot

• Water goes into the carrot

What happens when a carrot is put into NaCl water?

• Water leaves carrot

• Water goes into the carrot