bio

• Plant primary tissues


  • Meristematic tissues
  • Permanent tissues
• Meristematic tissues

  Contain cells that either undifferentiated or incompletely differentiated, they continue to divide and contribute to the growth of the cells

  
• Permanent tissues


  Contain cells that no longer actively dividing
• Tissue systems

  • Dermal tissues
  • Vascular tissues
  • Ground tissues
• Dermal tissues


  • Functions the same as epithelial tissue, covers and protects the plant, control gas exchange and water absorption, found in the outer layer of roots, stems, and leaves (epidermis)
• Dermal tissue cells


  • Epidermal cells
  • Guard cells
  • Trichomes
• Epidermal cells

  Make up the majority of epidermis, secrete cuticle (waxy substance in the leaves, controls the transpiration of the plant)
• Guard cells


  Surround and control the stoma (the hole, plural: stomata)
• Trichomes


  Hair-like structures in the epidermis for defense, helps for photosynthesis, decrease the exposure to light
• Vascular tissues

  • Transports water, minerals, and sugars to different parts of the plant, exist in two types: xylem and phloem
• Xylem cells


  • Xylem parenchyma
  • Tracheids
  • Vessel elements
• Tracheids

  Transport water, slender & thin, has sharp edge
• Vessel elements


  Transport water, wide & flat
• Phloem cells


  • Sieve-tube elements
  • Companion cells
  • Phloem parenchyma
  • Phloem fibers
• Sieve-tube elements


  Transports glucose
• Companion cells

  Accompany the sieve-tube elements, has complete organelles
• Phloem fibers


  Supporting cells
• Tracheophytes are vascular plants (flowering plants), Bryophytes are non-vascular plants (mosses, etc.)
• Photosynthesis can occur anywhere as long as it has chloroplast
• Dicot vs Monocot

  • Dicot: arranged, root: taproot
  • Monocot: scattered, leaves: parallel veins, roots: fibrous
• Plant primary tissues


  • Meristematic tissues
  • Permanent tissues
• Meristematic tissues


  Contain cells that either undifferentiated or incompletely differentiated, they continue to divide and contribute to the growth of the cells
• Permanent tissues


  Contain cells that no longer actively dividing
• Tissue systems


  • Dermal tissues
  • Vascular tissues
  • Ground tissues
• Dermal tissues


  • Functions the same as epithelial tissue, covers and protects the plant, control gas exchange and water absorption, found in the outer layer of roots, stems, and leaves (epidermis)

  
• Dermal tissue cells


  • Epidermal cells
  • Guard cells
  • Trichomes
• Epidermal cells


  Make up the majority of epidermis, secrete cuticle (waxy substance in the leaves, controls the transpiration of the plant)

  
• Guard cells


  Surround and control the stoma (the hole, plural: stomata)
• Trichomes


  Hair-like structures in the epidermis for defense, helps for photosynthesis, decrease the exposure to light
• Vascular tissues


  • Transports water, minerals, and sugars to different parts of the plant, exist in two types: xylem and phloem

  
• Xylem cells


  • Xylem parenchyma
  • Tracheids
  • Vessel elements
• Tracheids


  Transport water, slender & thin, has sharp edge
• Vessel elements


  Transport water, wide & flat
• Phloem cells


  • Sieve-tube elements
  • Companion cells
  • Phloem parenchyma
  • Phloem fibers
• Sieve-tube elements


  Transports glucose
• Companion cells


  Accompany the sieve-tube elements, has complete organelles
• Phloem fibers


  Supporting cells
• Tracheophytes are vascular plants (flowering plants), Bryophytes are non-vascular plants (mosses, etc.)
• Photosynthesis can occur anywhere as long as it has chloroplast
• Dicot vs Monocot


  • Dicot: arranged, root: taproot
  • Monocot: scattered, leaves: parallel veins, roots: fibrous