Across
- 3. one of two principal body types occurring in members of the invertebrate animal phylum Cnidaria
- 4. rigid or articulated envelope that supports and protects the soft tissues of certain animals
- 5. an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc
- 7. An air-breathing egg characterized by a shell and extraembryonic membranes.
- 8. any so-called cold-blooded anima
- 9. a chemical reaction that absorbs energy
- 14. comprise all species of animals within the subphylum Vertebrata, including all mammals, birds, reptiles, amphibians, and fish.
- 15. symmetry around a central axis, as in a starfish or a tulip flower.
- 16. 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.
- 18. Glandular organ located on the chest
- 19. the hollow, columnar, sessile form of Cnidarians
- 20. a non-vascular type of supporting connective tissue that is found throughout the body
- 21. the internal skeleton or framework of the body of an animal
Down
- 1. a system of canals in echinoderms containing a circulating watery fluid that is used for the movement of the tentacles and tube feet.
- 2. the assemblage of organisms inhabiting the seafloor.
- 6. a form of asexual reproduction in which a new individual develops from some generative anatomical point of the parent organism
- 10. the shedding or casting off of an outer layer or covering and the formation of its replacement.
- 11. located in the body cavity and is derived from an outpocketing of the digestive tube.
- 12. the property of being divisible into symmetrical halves on either side of a unique plane.
- 13. the condition of having both male and female reproductive organs.
- 17. lack of equality or equivalence between parts or aspects of something; lack of symmetry.