Biology summer exam 2013

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Invertebrates

  • Animals without a backbone or internal skeleton
  • 5 main groups of invertebrate

Echinoderms

  • Spiny Skin
  • 5 parts to he body
  • Suckers on tube like feet help them to move
  • Live in the sea

Coelenterates

  • Sac like body with one opening
  • Stinging tentecales
  • Live in water

Worms

  • 3 main groups
  • Flatworms have a flat body
  • Round worms have a smooth, thread like body
  • Segmented worms have a…

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