Other questions in this quiz

2. How many species of sponges are there?

  • 2,500
  • 4,500
  • 8,500
  • 6,500

3. Water enters the sponge through

  • Choanocytes
  • Small pores
  • The water canal

4. Some sponges show radial symmetry but most show no symmetry

  • True
  • False

5. Two of the groups have spicules made of

  • Silica
  • Calcium carbonate

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