Transpiration

• What is transpiration in plants?

  Evaporation of water from leaf surfaces
• What factors affect the rate of transpiration?

  Temperature, humidity, wind, and light intensity
• What are the roles of stomata in plants?

  Gas exchange and water loss
• Where does photosynthesis take place in the leaf?

  In the palisade mesophyll
• What is the function of xylem tissue?

  Transport water and dissolved minerals
• How does water enter the roots of a plant?

  Through root hair cells
• What initiates the process of transpiration?

  Evaporation of water from leaf cells
• What is the transpiration stream?

  The movement of water from roots to leaves
• Why is transpiration important for plants?

  It cools leaves and aids photosynthesis
• How does temperature affect the rate of transpiration?

  Higher temperatures increase the rate
• Why does transpiration occur faster in dry conditions?

  Evaporation is quicker when air is dry
• How does wind influence transpiration rates?

  Wind removes water vapor, increasing evaporation
• What happens to stomata in high light intensity?

  They open to allow gas exchange
• What do guard cells do during the day?

  They swell and open the stomata
• What is the effect of closing stomata on photosynthesis?

  It reduces the plant's ability to photosynthesize
• What are the factors affecting the rate of transpiration?

  • Temperature: Higher temperatures increase rate
  • Humidity: Lower humidity increases rate
  • Wind: Wind increases evaporation
  • Light Intensity: Higher light opens stomata
• What roles do stomata and guard cells play in plants?

  • Stomata: Allow gas exchange and water loss
  • Guard Cells: Control the opening and closing of stomata