Plant Tissues

• Where does photosynthesis take place in a plant?

  In the leaves
• What is the leaf classified as in a plant?

  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 are guard cells?

  Cells that surround stomata
• What is the role of palisade mesophyll?

  Contains chloroplasts for photosynthesis
• What is a key feature of spongy mesophyll?

  It is full of air spaces
• How does carbon dioxide move in the leaf?

  It diffuses from stomata to palisade cells
• What does xylem tissue transport?

  Water and dissolved mineral ions
• What mineral is mentioned as being transported by xylem?

  Magnesium
• What does phloem tissue transport?

  Dissolved sugars produced by photosynthesis
• What is the process of moving sugars through phloem called?

  Translocation
• Where is meristem tissue found?

  At growing tips of shoots and roots
• What type of cells does meristem tissue contain?

  Stem cells
• What can stem cells in meristem tissue differentiate into?

  Different types of plant tissue
• What are the main tissues found in a 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
• What is the significance of chlorophyll in chloroplasts?

  It absorbs light energy for photosynthesis
• How do the functions of xylem and phloem differ?

  Xylem transports water; phloem transports sugars
• What is the role of air spaces in spongy mesophyll?

  Facilitates gas diffusion within the leaf
• What is the primary function of guard cells?

  Regulate the opening and closing of stomata
• Why is the upper epidermis transparent?

  To allow light to reach photosynthetic cells
• How does the structure of the leaf support its function in photosynthesis?

  Different tissues work together for gas exchange and light absorption