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4 Written questions

3 Multiple choice questions

  1. one of the small openings in a sponge's body through which water enters
  2. an organism that obtains organic food molecules by eating other organisms or their byproducts and that cannot synthesize organic compounds from inorganic materials
  3. any of the flagellate cells that line the cavities

3 True/False questions

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


  2. gemmulean asexual reproductive structure produced by some freshwater sponges


  3. larvaean independent and immature form of an organism that is morphologically different from the adult form


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