Across
- 1. system a network of hydraulic canals to echinoderms
- 3. relating to the bottom of a body of water
- 5. an organism that has both male and female
- 8. a firm flexible connective tissue
- 9. the sessile stage of a cnidarian
- 10. an animal that possesses a backbone or spinal
- 12. an animal that does not posses a back bone
- 14. a sudden failure of a structural member
- 15. symmetry a body plan organized around a central axis
- 17. an organism that maintains constant interal body
Down
- 2. a body plan that lacks any organism divide into halves
- 4. a rigis external covering for the body
- 6. symmetry a body plan where the organism is divided
- 7. an organism that relies on external environment
- 11. the free swimming stage of a body with tentacles
- 13. bladder a gas filled sac found in many bony fish
- 16. eggs eggs produced by reptiles birds and egg