Transpiration and Stomatal Movement Quiz

What is the process called when plants release water vapor from their leaves?

• Precipitation

• Transpiration

• Evaporation

• Condensation

Which type of transpiration accounts for the majority of water loss in plants?

• Stomatal transpiration

• Lenticular transpiration

• Cuticular transpiration

• Root transpiration

What are the specialized cells that surround a stoma called?

• Palisade cells

• Epidermal cells

• Guard cells

• Mesophyll cells

In photoactive plants, when do the stomata typically open?

• During the day

• At night

• In the morning

• In the evening

What causes the guard cells to become turgid and open the stomata?

• Loss of water

• Increase in sugar content

• Decrease in light

• Increase in temperature

According to the starch-sugar interconversion theory, what happens to starch in the presence of light?

• It is converted into oxygen

• It is converted into carbon dioxide

• It remains unchanged

• It is converted into glucose 1 phosphate

What effect does a high pH have on the stomata according to the starch-sugar interconversion theory?

• It causes the stomata to shrink

• It causes the stomata to close

• It has no effect

• It favors the opening of the stomata

What role do potassium ions play in the active potassium ion transport mechanism?

• They increase the osmotic potential negatively

• They have no effect on osmotic potential

• They increase the temperature

• They decrease the osmotic potential

What happens to potassium ions in the guard cells in the dark?

• They move out of the guard cells

• They convert into sodium ions

• They move into the guard cells

• They remain in the guard cells

What is formed when potassium ions join with malate in the guard cells?

• Potassium sulfate

• Potassium nitrate

• Potassium malate

• Potassium chloride