Plant tissues

• Meristematic tissues


  Produce new cells through cell division for plant growth
• Permanent tissues


  Dermal tissue, ground tissue, vascular tissue
• Dermal tissue


  • Protects from injury, absorbs water, allows diffusion of carbon dioxide
• Epidermis


  The outermost layer of the plant body
• Epidermal tissue


  • Forms a single layer of flat cells, protects inner layers, coated with waxy cuticle to reduce water loss, contains root hair cells and guard cells
• Root hair cell


  Specialized epidermal cell with a projection to increase surface area for water absorption
• Guard cell


  Specialized epidermal cell that regulates the opening of the stomata to allow carbon dioxide diffusion
• Ground tissue


  • Located between the epidermis and vascular bundles, provides support, stores food, carries out photosynthesis
• Types of ground tissue


  • Parenchyma tissue
  • Collenchyma tissue
  • Sclerenchyma tissue
• Parenchyma tissue


  Consists of parenchyma cells with thin cell walls, stores starch/protein/water, contains chloroplasts for photosynthesis, provides support when turgid
• Collenchyma tissue


  Made up of collenchyma cells with thickened cell walls, provides support to young non-woody stems
• Sclerenchyma tissue


  Made up of dead sclerenchyma cells with thick lignin-rich cell walls, provides support to mature plant parts