Poriferan and Cnidarians

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Across
  1. 2. Protein-based material holding spicules together
  2. 4. Individuals having both male and female reproductive organs
  3. 6. The main opening?mouth of a sea sponge
  4. 8. Organisms with both male and female reproductive organs
  5. 13. Central cavity of a sea sponge
  6. 16. Complex, highly organized sea sponge body type
  7. 17. Organisms that strain water to capture food particles
  8. 18. Immature stage of an animal, often differing from adults
  9. 19. Asexual reproduction method where new individuals grow from parent's body parts
  10. 20. organisms living on or near the seafloor
Down
  1. 1. fixed,usually sessile, cnidarian body form
  2. 2. needle-like skeletal structures in sea sponges
  3. 3. Animals attached to a surface, unable to move
  4. 5. free-floating, bell-shaped cnidarian body type
  5. 7. free-swimming, flat, ciliated larval stage of cnidarians
  6. 9. Small pores in sea sponges for water entry
  7. 10. Simplest type of a sea sponge body type
  8. 11. Whip-like structures for movement or sensing
  9. 12. Organisms with separate male and female individuals
  10. 14. Small,usually microscopic, drifting aquatic organisms
  11. 15. Cells or tissues able to shorten and tighten