Plant Cell Organisation

• Tissues and organs

  • epidermal tissue - covers whole plant
  • palisade mesophyll tissue - where the most photosynthesis happens
  • spongy mesophyll tissue - contains big air spaces to allow gases to diffuse in and out of cells
  • xylem & phloem - transport things like water, minerals, food around the plant
  • meristem tissue - found at growing tips of the shoots and roots and is able to change into types of plant cells
• 5 types of tissue in a leave

  1. epidermal - waxy cuticle, helps reduce water loss by evaporation
  2. upper epidermis - transparent so light can pass through
  3. palisade - lots of chloroplast, at the top of leave to get light
  4. xylem/phloem - vascular bundles which deliver water and other nutrients to the entire leave
  5. lower epidermis is full of little holes called stomata, which open and close letting CO2 by guard cells