Across
- 3. Bladder located in the body cavity and is derived from an outpocketing of the digestive tube
- 9. An animal without a backbone
- 10. Symmetry a form of symmetry in which the opposite sides are similar.
- 11. lack or absence of symmetry
- 15. one of two principal body types occurring in members of the invertebrate animal phylum Cnidaria
- 20. warm-blooded animals.
- 21. a skeleton that is on the inside of a body, like humans, dogs, or some fish.
Down
- 1. a non-vascular type of supporting connective tissue that is found throughout the body
- 2. Eggs eggs that are encased by extra-embryonic membranes
- 4. animals that possess a vertebral column and/or notochord at any point in their lives
- 5. Vascular System a system of vessels in echinoderms containing a circulating watery fluid that is used especially for the movement of tentacles and tube feet.
- 6. an organism (plant or animal) having both male and female reproductive
- 7. any so-called cold-blooded animal
- 8. the shedding or casting off of an outer layer or covering and the formation of its replacement.
- 12. Glands milk-producing gland of female mammals.
- 13. an organ that connects the developing fetus to the uterine wall, thereby allowing nutrient uptake, waste elimination, and gas exchange via the mother's blood supply.
- 14. an asexual reproduction method in which a new organism develops from a bud of an existing organism.
- 16. rigid or articulated envelope that supports and protects the soft tissues of certain animals.
- 17. of, relating to, or occurring at the bottom of a body of water.
- 18. symmetry in which the sides exhibit correspondence or regularity of parts around a central axis.
- 19. a projecting mass of swollen and hypertrophied or tumorous membrane