Across
- 2. relies on external sources of heat to regulate its body temperature, rather than internal metabolic processes like mammals and birds.
- 3. an organism that possesses both male and female reproductive organs or tissues, or that can produce both male and female gametes.
- 4. the free-swimming, umbrella-shaped body plan of certain cnidarians, like jellyfish, characterized by a gelatinous body and tentacles used for capturing prey and reproduction.
- 5. a unique, coelomic-derived hydraulic system used for locomotion, feeding, and gas exchange, consisting of canals and tube feet that extend and contract using water pressure.
- 7. symmetry in which similar anatomical parts are arranged on opposite sides of a median axis so that one and only one plane can divide the individual into essentially identical halves.
- 8. lack of equality or equivalence between parts or aspects of something
- 9. a flexible, strong, and specialized connective tissue that cushions joints, supports structures, and facilitates movement
- 13. a gas-filled organ in bony fish that helps them regulate buoyancy, allowing them to stay at a desired depth in the water without expending energy on swimming.
- 15. a sessile, cylindrical body form, often attached to a surface, with a mouth surrounded by tentacles
- 16. a flattened circular organ in the uterus of pregnant eutherian mammals, nourishing and maintaining the fetus through the umbilical cord
- 18. characterized by or formed with absorption of heat: warm-blooded
- 20. an internal skeleton, such as the bony or cartilaginous skeleton of vertebrates
Down
- 1. animals that neither develop nor retain a vertebral column
- 4. shed old feathers, hair, or skin, or an old shell, to make way for a new growth
- 6. animals with a vertebral column (backbone or spine), and a cranium, or skull
- 10. a type of egg that is laid by reptiles, birds, and some mammals
- 11. a hard, external covering that provides support and protection for many invertebrate animals, particularly arthropods like insects, spiders, and crustaceans.
- 12. the milk-producing gland of women or other female mammals.
- 14. plant and animal symmetry in which similar parts are arranged in a balanced way around the center of the body
- 17. a form of asexual reproduction where a new individual develops as an outgrowth or "bud" from the parent organism, which then detaches to become independent.
- 19. anything related to or occurring on the bottom of a body of water, including the sediment surface and sub-surface layers