Plant tissues

Cards (27)

  • What should you be able to describe by the end of the video?
    The roles of different tissues in a plant
  • Why is it important to learn the details in this video?
    It is likely to be on your exam
  • Where does photosynthesis take place in a plant?
    In the leaves
  • What is the leaf classified as in plant anatomy?
    A plant organ
  • What type of cells cover the top and bottom of the leaf?
    Epidermal cells
  • What is the function of the epidermis in a leaf?
    It protects the surface of the leaf
  • What is a key adaptation of the upper epidermis?
    It is transparent
  • How does the transparency of the upper epidermis benefit the leaf?
    It allows light to pass to photosynthetic cells
  • What covers the upper epidermis to reduce water evaporation?
    The waxy cuticle
  • What is the role of the lower epidermis in a leaf?
    It contains stomata for gas exchange
  • What are the tiny pores in the lower epidermis called?
    Stomata
  • What do stomata allow to enter and leave the leaf?
    Carbon dioxide enters, oxygen leaves
  • What is the function of guard cells?
    They control the opening and closing of stomata
  • What is found at the top of the leaf?
    The palisade mesophyll
  • What do palisade cells contain that is crucial for photosynthesis?
    Chloroplasts
  • What is the key feature of the spongy mesophyll?
    It is full of air spaces
  • How do air spaces in the spongy mesophyll benefit the leaf?
    They allow gas diffusion to palisade cells
  • What two tissues are mentioned in relation to the leaf besides mesophyll?
    Xylem and phloem
  • What does xylem tissue transport?
    Water and dissolved mineral ions
  • What is one use of water transported by xylem in photosynthesis?
    It is used in the photosynthesis process
  • What does phloem tissue transport?
    Dissolved sugars produced by photosynthesis
  • What is the process of moving sugars through phloem called?
    Translocation
  • What is the final type of plant tissue discussed?
    Meristem tissue
  • Where is meristem tissue found in plants?
    At growing tips of shoots and roots
  • What do stem cells in meristem tissue do?
    They can differentiate into various plant tissues
  • What should you remember about plant tissues for your exam?
    There will be plenty of questions on them
  • What are the roles of different tissues in a plant?
    • Epidermal tissue: Protects leaf surface
    • Palisade mesophyll: Contains chloroplasts for photosynthesis
    • Spongy mesophyll: Allows gas diffusion
    • Xylem: Transports water and minerals
    • Phloem: Transports sugars
    • Meristem: Contains stem cells for growth