Plant Cell Specialisation

• What are the specialized plant cells discussed in the video?

  Root hair cells, xylem cells, phloem cells
• How do root hair cells adapt to their function?

  • Increase surface area for absorption
  • Lack chloroplasts since they are underground
• What are the key features of xylem cells?

  • Thick walls containing lignin for support
  • End walls broken down to form long tubes
  • No nucleus, cytoplasm, vacuole, or chloroplasts
• What do xylem cells transport?

  Water and dissolved minerals
• What is the role of lignin in xylem cells?

  It provides support to the plant
• How do the internal structures of xylem cells facilitate their function?

  No internal structures allow easy flow of water
• What are the key features of phloem cells?

  • Consist of phloem vessel cells and companion cells
  • Phloem vessel cells have no nucleus and limited cytoplasm
  • End walls have sieve plates for sugar movement
• What do phloem cells transport?

  Dissolved sugars
• What is the function of companion cells in phloem?

  They provide energy to phloem vessel cells
• How do the features of phloem vessel cells facilitate sugar transport?

  Limited cytoplasm and sieve plates allow movement