Sub-topic #2: Types of Cnidae

• Identify which type of Cnidae is being referred to:

  Nematocyst

  • most common with all cnidarians bearing this
• Identify which type of Cnidae is being referred to:

  Nematocyst

  • for food-getting, defense, and intraspecies spacial competition
• Identify which type of Cnidae is being referred to:

  Spirocysts

  • have a thin capsule wall and the thread is coiled
• Identify which type of Cnidae is being referred to:

  Spirocysts

  • it has no spine but the thread secrete adhesive substance
• Identify which type of Cnidae is being referred to:

  Ptychocysts

  • unique to anemones from Order Ceriantharia
• Identify which type of Cnidae is being referred to:

  Ptychocysts

  • functions for protection and on making tubes