ppq

• Compare the structure of xylem and phloem


  Xylem=dead cells phloem=living cells

  no pores pores

  lignin cytoplasm

  BOTH made of cells+tubular
• Compare the functions of xylem and phloem

  Xylem Phloem

  transpiration translocation

  transports water transports sugar

  +mineral ions BOTH transport substances

  throughout the plant.
• Red blood cells vs Plant cells


  • Contains haemoglobin
  • No cell wall
  • No nucleus
  • Smaller
• Plant cellsvs Red blood cells


  • Does not contain haemoglobin
  • Cell wall
  • Nucleus
  • Bigger
  • Chloroplasts
• Structures common to both red blood cells and plant cells

  • Cell membrane
  • Cytoplasm
• Explain each stage of the cycle.


  INTERPHASE: DNA / chromosomes replicate +Subcellular structures grow in number.

  MITOSIS: one set of chromosomes is pulled / moved to each end of the cell.

  CYTOKENESIS: the cytoplasm and cell membrane divides (to form two cells)