PLANT TISSUE

• Epidermal tissue


  Thin layer of cells covering the top and bottom of the leaf
• Upper epidermis


  • Transparent to allow light to pass through
  • Covered in waxy cuticle to reduce water evaporation
• Lower epidermis


  • Contains tiny pores called stomata
  • Has guard cells on either side of the stomata
• Palisade mesophyll


  Packed with chloroplasts that contain chlorophyll for photosynthesis
• Spongy mesophyll


  • Full of air spaces to allow carbon dioxide and oxygen diffusion
• Xylem tissue


  Transports water and dissolved mineral ions from roots to leaves
• Phloem tissue


  Transports dissolved sugars produced by photosynthesis from leaves to rest of plant
• Translocation


  Movement of sugars through phloem tissue
• Meristem tissue


  Contains stem cells that can differentiate into different plant tissues
• Meristem tissue is found in growing tips of shoots and roots