Transpiration and Translocation

• What is the process by which plants transport sugars?

  Translocation
• How do plants transport water?

  Through transpiration
• Where does photosynthesis occur in plants?

  In the leaves
• What are Flo cells primarily responsible for?

  Transporting sugars
• What are FL tubes made of?

  Flo cells arranged end to end
• What do the small pores between Flo cells allow?

  Movement of celsa
• What happens to sugars once they reach their destination cells?

  They can be used for energy or stored
• In which directions can the Flo tubes transport substances?

  Both up and down
• What type of cells make up xylem tubes?

  Dead xylem cells
• What is the role of xylem tubes?

  Transport water and mineral ions
• What drives the movement of water through a plant?

  Evaporation of water from leaves
• How does evaporation from leaves affect water movement?

  It creates a pull that drags water up
• What is transpiration?

  Evaporation of water from leaves
• What is the transpiration stream?

  The chain of water molecules moving up
• What factors influence the rate of transpiration?

  Light intensity, temperature, air flow, humidity
• How does light intensity affect transpiration?

  Higher light increases photosynthesis and transpiration
• What happens to transpiration at night?

  It decreases due to closed stomata
• How does temperature affect the rate of transpiration?

  Higher temperatures increase evaporation rates
• What happens to the concentration gradient of water in leaves?

  It favors diffusion out of the leaf
• How does high air flow affect transpiration?

  It increases the concentration gradient
• How does humidity affect transpiration rates?

  Higher humidity decreases the rate of transpiration
• What are the main components of plant mass transport systems?

  • Flo tubes: transport sugars (translocation)
  • Xylem tubes: transport water and minerals
  • Transpiration: evaporation of water from leaves
  • Transpiration stream: movement of water molecules
• What factors affect the rate of transpiration in plants?

  1. Light intensity
  2. Temperature
  3. Air flow
  4. Humidity
• How does transpiration contribute to plant water transport?

  • Evaporation creates a pull on water
  • Water moves up through xylem tubes
  • Maintains a steady flow of water