Across
- 3. terrestrially adapted egg, characterized by a shell and extra-embryonic membranes
- 5. a hard supporting or protective structure (as of an insect, spider, or crustacean) on the outside of the body
- 8. is an individual animal or flower that has both male and female reproductive organs.
- 9. a symmetry in which the sides exhibit correspondence or regularity of parts around a central axis
- 12. strong, flexible connective tissue that protects your joints and bones.
- 14. organ that develops in the uterus during pregnancy.
- 16. buoyancy organ possessed by most bony fish.
- 17. having two sides or halves that are not the same
- 18. animal whose regulation of body temperature depends on external sources, such as sunligh
- 19. or occurring at the bottom of a body of water.
Down
- 1. a network of water vessels in the body, the tube feet being operated by hydraulic pressure within the vessels
- 2. the milk-producing gland of women or other female mammals.
- 4. an animal without backbone
- 6. animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes
- 7. a small growth, usually benign and with a stalk, protruding from a mucous membrane
- 10. apotropaic symbol used to protect from and ward off the negative
- 11. the shedding or casting off of an outer layer or covering and the formation of its replacement
- 13. characterized by or formed with absorption of heat
- 15. internal skeleton, such as the bony or cartilaginous skeleton of vertebrates.
- 19. an asexual reproduction method in which a new organism develops from a bud of an existing organism