Plant Tissues

• 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 to allow light passage
• What does the waxy cuticle do?

  Reduces water evaporation from the leaf
• What are stomata?

  Tiny pores on the lower epidermis
• What is the function of stomata?

  Allow gas exchange in the leaf
• What do guard cells do?

  Control the opening and closing of stomata
• What is found at the top of the leaf?

  The palisade mesophyll
• What are palisade cells packed with?

  Chloroplasts
• What is the role of chloroplasts?

  Absorb light energy for photosynthesis
• What is a key feature of the spongy mesophyll?

  It is full of air spaces
• What do air spaces in the spongy mesophyll allow?

  Carbon dioxide to diffuse to palisade cells
• What is the function of xylem tissue?

  Transport water from roots to leaves
• What does xylem also transport besides water?

  Dissolved mineral ions
• What is the role of phloem tissue?

  Transport dissolved sugars from leaves
• What is translocation?

  The movement of sugars through phloem
• What is the final type of plant tissue mentioned?

  Meristem tissue
• Where is meristem tissue found?

  At growing tips of shoots and roots
• What do stem cells in meristem tissue do?

  Differentiate into various plant tissues
• What are the main tissues found in a plant leaf and their roles?

  • 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