Plant Tissues

• What are the main plant tissues and their functions?

  • Epidermal tissue: Covers the plant, reduces water loss
  • Palisade mesophyll: Contains chloroplasts for photosynthesis
  • Spongy mesophyll: Allows gas diffusion
  • Xylem: Transports water and minerals
  • Phloem: Transports food substances
  • Meristematic tissue: Allows growth and differentiation
• What is the function of xylem in plants?

  Xylem transports water and mineral ions from roots to leaves
• What is the role of phloem in plants?

  Phloem transports food substances in both directions
• What are plants made up of to carry out their functions?

  Many different tissues
• What are the features and functions of epidermal tissue in plants?

  • Covers the whole plant
  • Features a waxy cuticle
  • Function: Reduces water loss by evaporation
• What is the role of palisade mesophyll tissue in plants?

  • Found underneath the epidermal tissue
  • Contains many chloroplasts
  • Function: Photosynthesis occurs rapidly due to high chloroplast density and light exposure
• What is the function of spongy mesophyll tissue in plants?

  • Located underneath the palisade mesophyll
  • Contains many air spaces
  • Function: Allows gases to diffuse in and out of cells
• What is the structure and function of xylem in plants?

  • Made up of dead cells joined together
  • Creates a continuous tube
  • Function: Transports water and mineral ions from roots to stems and leaves
  • Strengthened with lignin, allowing for waterproofing and strength
• What is the transpiration stream in plants?

  The movement of water from the roots to the stem and leaves, where it evaporates
• What is the structure and function of phloem in plants?

  • Composed of elongated cells with holes in cell walls (sieve plates)
  • Function: Transports food substances in both directions
  • Process called translocation
• Where is meristematic tissue found in plants?

  At the tips of shoots and roots
• What is the function of meristematic tissue in plants?

  It can differentiate into different types of plant cells, allowing growth
• What tissues are found in a leaf as a plant organ?

  • Epidermis
  • Palisade mesophyll
  • Spongy mesophyll
  • Xylem
  • Phloem
  • Guard cells