transport in plants

• what is the function of the xylem

  to transport water
• what is the function of the phloem

  to transport soluble organic compounds
• what is the transport pathway through the cell wall

  apoplast
• what is the transport pathway through the vacuole

  vacuolar
• what is the transport pathway through the cytoplasm

  symplast
• where to mesophytes grow

  areas of moderate water supply
• where do hydrophytes grow

  areas with plentiful supply of water
• where do xerophytes grow

  in areas of low water availiability
• why does water move from the root to the shoot

  • root pressure
  • cohesion-tension
  • capillarity
• factors effecting transpiration

  • humidity
  • light intensity
  • temp
  • air movement
• ANT CLASH

  availiability of water

  number of leaves

  temp

  cuticle

  light intensity

  air movement

  stomata

  humidity
• translocation is the movement of soluble organic products from source to sink
• what is the evidence for translocation

  • ringing experiments
  • aphids
  • radioactive tracers
• cell walls in xylem are

  thick, made of lignin and are impermeable
• cell walls in phloem are

  thin, made of cellulose and are permeable
• structure of the xylem have

  tracheids
• structure of phloem have

  sieve tube elements and companion cells