Across
- 5. A single individual has both male and female reproduction organs
- 8. The inner shell of an organism
- 9. Animals that have no backbone
- 11. Has no left and right, only top and bottom
- 15. An organ that connects the developing fetus to the uterine wall
- 16. A type of connective tissue that is firm and flexible
- 17. Opposite sides are similar, most marine animals have this
- 18. Lower ecological zone in a body of water
- 19. Body that is free swimming and sexual
Down
- 1. An outer shell of an organism
- 2. Asexual reproduction by which a new develops from parent tissue
- 3. A highly evolved and specialized organ present in pairs, one on each side of the anterior chest wall.
- 4. Sessile form of Cnidarians
- 6. Heat comes from the outside of their bodies
- 7. An organism must produce its own body heat through metabolism
- 10. system of vessels in echinoderms containing a circulating watery fluid that is used especially for the movement of tentacles
- 12. An air-breathing egg characterized by a shell and extraembryonic membranes.
- 13. It contains gas (usually oxygen) and functions as a hydrostatic,
- 14. Animals that have a backbone
- 19. A shedding process that happens to the animal then a formation of its replacement