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Cestodes

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WonderfulSeattle
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7 Questions

  • Four suckers
  • No rostellum
  • No hooks
  • Longer than wide rectangular
  • 15-30 branches

Answer hidden

  • Four suckers
  • Has rostellum
  • Double crown hooks
  • Somewhat square
  • 7-15 branches

Answer hidden

  • Four suckers
  • Has rostellum
  • No hooks
  • Twice as wide as long
  • Saclike uterus filled with eggs

Answer hidden

  • Four suckers
  • Short rostellum
  • One row of hooks
  • Twice as wide as long
  • Saclike uterus filled with eggs

Answer hidden

  • Four suckers
  • Has rostellum; clubshaped
  • 1-7 circles of spines
  • Pumpkin seed
  • Full of eggs in enclosed embryonic membrane

Answer hidden

  • Two sucking grooves
  • Almond rostellum
  • No hooks
  • Wider than long
  • Central; rosette

Answer hidden

  • Four suckers
  • 36 hooks
  • Scolex, small neck, and three proglottids, one at each developmental stage – immature, mature, and gravid

Answer hidden

Study Notes

Tapeworm Characteristics

  • Four suckers present in all types
  • Rostellum presence varies among types
  • Hook presence and type differ among types
  • Body shape and size differ among types:
    • Longer than wide rectangular
    • Somewhat square
    • Twice as wide as long
    • Pumpkin seed shape
    • Wider than long
  • Branching patterns differ among types:
    • 15-30 branches
    • 7-15 branches
  • Reproductive characteristics:
    • Saclike uterus filled with eggs
    • Full of eggs in enclosed embryonic membrane
  • Scolex characteristics:
    • Almond-shaped rostellum
    • Central; rosette
  • Developmental stages:
    • Scolex, small neck, and three proglottids (immature, mature, and gravid)

Hook Characteristics

  • Double crown hooks present in some types
  • One row of hooks present in some types
  • 1-7 circles of spines present in some types
  • 36 hooks present in some types
  • No hooks present in some types

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