Across
- 2. Cold-blooded animal trait
- 3. Has both male and female reproductive organs
- 4. Free-swimming cnidarian body form
- 5. Echinoderm system for movement and feeding, powered by water
- 7. Body with left and right halves
- 8. Body with no equal proportions in shape
- 9. Flexible connective tissue
- 13. Organ for buoyancy in fish
- 15. A sessile, tubular body form in cnidarians
- 16. Nutrient-exchanging organ during pregnancy
- 18. Warm-blooded animal trait
- 20. Internal(inside)skeletal structure
Down
- 1. Doesn't have a backbone
- 4. Shedding an outer covering for growth
- 6. Animal with a spinal column
- 10. Protective eggs enabling land development
- 11. External(outside)body covering for protection
- 12. Milk-producing organ
- 14. Body parts are arranged in a balanced way around the center of the body
- 17. Asexual reproduction method
- 19. Living at the bottom of a body of water