Across
- 5. learned behavior that involves thinking, reasoning, and information processing
- 6. the breastbone in vertebrates; in birds, bone to which flight muscles are attached
- 7. learned behavior that occurs when an association is made between two different kinds of stimuli
- 9. auditory communication in which animals use their vocal organs to produce sounds with shared meanings
- 11. fluid-filled membrane that surrounds and protects the developing organism in the womb
- 15. cycle that occurs daily, such as sleeping and waking
- 18. a structure such as a leg or an antenna that grows and extends from the body or body covering
- 21. tiny bristle that digs into soil and anchors an earthworm as it moves forward
- 22. rasping tonguelike organ with rows of teeth that many mollusks use in feeding
- 23. permanent learning that occurs only within a specific period of time in an animal's life
- 28. genetically based behavior
- 30. organism permanently attached to one place
- 32. organism that generates its body heat internally by its own metabolism
- 34. ecological behavior that involves finding and eating food
- 35. barbed feather that covers a bird's body, wings, and tail and forms the body contour
- 36. nematocyst-containing stinging cell on a cnidarian's tentacle
- 37. innate behavior that occurs in a sequence of specific actions in response to a stimulus
- 38. the pseudocoelom in roundworms; the fluid within a closed space that gives rigid support for muscles to work against
- 39. in invertebrates, posterior body region that contains fused segments, digestive structures, reproductive organs, and bears additional legs; in vertebrates, part of body that is between the diaphragm and pelvis
- 40. caretaking behavior that a parent provides to its offspring during the early stages of development
- 41. seasonal movement of a group of animals to a new location for feeding and breeding
Down
- 1. results from an interaction between innate behavior and past experience within a specific environment
- 2. paddle-shaped structure of a fish or other aquatic animal used for steering, balance, and propulsion
- 3. egg that provides a complete environment for the developing embryo with a yolk sac for nutrition, protective internal membranes and fluid, and a protective outer shell
- 4. learned behavior that occurs when an association is made between a response to a stimulus and a punishment or a reward
- 5. species-specific series of movements or sounds used to attract a mate
- 8. system of fluid-filled, closed tubes that allow echinoderms to control movement and get food
- 10. Animal of the phylum Chordata having a dorsal tubular nerve cord, a notochord, pharyngeal pouches, and a postanal tail at some point in its development.
- 12. capsule whose threadlike tube contains poison and barbs and is discharged when prey touches a cnidarian
- 13. membrane that surrounds a mollusk's internal organs
- 14. competitive behavior in which an animal tries to adopt and defend a physical area against others of the same species
- 16. threatening or combative behavior between two members of the same species that usually does not result in injury or death
- 17. in most mammals, the specialized organ that provides food and oxygen to the developing young and removes its wastes
- 19. decrease in an animal's response after it has been repeatedly exposed to a specific stimulus that has no positive or negative effects
- 20. self-sacrificing behavior that benefits another individual
- 24. specialized outgrowth of the skin of birds used for flight and insulation
- 25. small, flat, platelike structure near the surface of the skin of most fishes
- 26. chordate without a backbone
- 27. body region of an arthropod consisting of three fused main segments that may bear legs and wings
- 29. mammalian gland that produces and secretes milk to nourish developing young
- 31. ranking system in which the top-ranked animal gets access to resources without conflict from others in the group
- 33. the way in which an animal responds to an external or internal stimulus