Transport in plants

• What does the xylem do?

  Transport water and nutrients in plants via transpiration.
• What does the phloem do?

  Transport nutrients and sugars throughout the plant via translocation.
• What is transpiration?

  Transpiration is the process by which plants release water vapor into the atmosphere via the stomata.
• Where does cell division in a plant occur?

  In the Meristem tissue which contains stem cells
• What is the stomata?

  tiny pores found mainly in the bottom of leaves
• What is the phloem made from?

  Elongated living cells
• What is the xylem made from?

  Dead hollow cells strengthened with lignin
• What is lignin?

  Carbohydrate material
• What are guard cells?

  Cells that  allow gas exchange and control water loss within the leaf.
• What does the rate of transpiration depend on?

  Humidity, temperature, wind speed and light intensity
• What controls the rate of gas exchange and transpiration?

  Stomata and Guard cells.