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4 Written Questions

3 Multiple Choice Questions

  1. within the body wall of a sponge, a specialized cell that crawls about and delivers nutrients from the choanocytes to the rest of the body cells
  2. one of the small openings in a sponge's body through which water enters
  3. a needle of silica or calcuim carbonate in the skeleton of some sponges

3 True/False Questions

  1. gemmulea needle of silica or calcuim carbonate in the skeleton of some sponges

          

  2. epidermisthe outer surface layer of cells of a plant or animal

          

  3. osculuman opening in a sponge's body through which water exits

          

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