Sponges

123456789101112131415
Across
  1. 2. Classification due to spongy textures
  2. 8. any of small calcareous or siliceous bodies embedded among cells
  3. 10. Resistant fibers of a sponge
  4. 11. Tube like cell of sponges
  5. 12. Animals that lack a backbone
  6. 13. Attached to the bottom or surface
  7. 14. A large opening in lots of sponges
  8. 15. transport food and oxygen
Down
  1. 1. Release eggs or sperm in water
  2. 3. No symmetry
  3. 4. Change during embryological development
  4. 5. Animal that feeds on suspended particles
  5. 6. Suspension feeders
  6. 7. Food trapping cells of sponges
  7. 9. a free swimming larva