Plant Cell Organisation

• What tissue covers the outside of a plant?

  Epidermal tissue
• In what tissue does most photosynthesis take place?

  Palisade mesophyll tissue
• What is spongy mesophyll tissue?


  A tissue in plants where there are big air spaces to allow gases to diffuse in and out of cells
• What are the xylem and phloem tissues?

  Plant tissues which transport water and nutrients around the plant respectively
• What is meristem tissue?


  Plant tissue found at the tips of shoots and roots which contains cells that can differentiate into many types of cell to allow the plant to grow
• What structure is a leaf?

  An organ
• What is a waxy cuticle?

  A layer on the outside of leaves which reduces water loss through evaporation
• Why is the upper epidermis transparent?

  So that light can pass through to the palisade layer
• What organelle does the palisade layer contain a lot of?

  Chloroplasts
• What do xylem and phloem deliver to the leaf?

  Water and nutrients
• What do phloem take away from the leaf?


  Glucose made by photosynthesis
• What other purpose do xylem and phloem have?

  They help maintain structure
• Which part of the leaf contains the stomata?

  The lower epidermis
• What is the role of the stomata?


  They allow carbon dioxide to diffuse into the leaf
• What cells open and close the stomata?

  Guard cells