Across
- 2. an (asexual) reproduction method
- 3. a system of vessels in echinoderms containing a circulating watery fluid that is used especially for the movement of tentacles and tube feet
- 4. the shedding or casting off of an outer layer or covering and the formation of its replacement
- 5. located in the body cavity and is derived from an outpocketing of the digestive tube
- 7. a projecting growth of tissue from a surface in the body
- 9. lack of absence or symmetry
- 10. any so-called cold-blooded animal
- 13. a non-vascular type of supporting connective tissue that is found throughout the body
- 15. one of two principal body types occurring in members of the invertebrate animal phylum Cnidaria
- 17. a term for warm-blooded animals
- 18. an animal that has a backbone and a skeleton
- 19. milk-producing gland of female mammals
- 20. similar parts are arranged in a balanced way around the center of the body
- 21. a hard covering that supports and protects the bodies of some types of animals
Down
- 1. a form of symmetry in which the opposite sides are similar
- 6. an animal without a backbone
- 8. The type of egg produced by reptiles, birds, and prototherian (egg-laying) mammals (amniotes)
- 11. anything associated with or occurring on the bottom of a body of water
- 12. an organism having both male & female organs
- 14. the internal skeleton or framework of the body of an animal
- 16. an organ that connects the developing fetus to the uterine wall