Across
- 3. stinging cells
- 5. fungus roots
- 11. partially covered by connective tissues
- 13. body cavity fully covered by connective tissues
- 14. study of animals
- 15. sense organs and nerve cells are concentrated on the head
- 17. study of interrelations between humans and plants
- 19. site of gamete production in plants
Down
- 1. sexes are separate
- 2. haploid stage
- 4. poriferan cavity
- 6. conducts water
- 7. one organism possesses two sexes
- 8. help facilitate diffusion of oxygen and carbon dioxide in plants
- 9. distributes sugars
- 10. body parts extend from a central point
- 12. diploid stage
- 16. no body cavity
- 18. distinct anterior and posterior ends and right and left sides