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animal with a backbone vertebrate
tough, flexible tissue that makes up all or part of the vertebrate endoskeleton cartilage
supportive framework of bone and cartilage that provides an internal place for muscle attachment; protects internal organs endoskeleton
cold-blooded animals; internal body temperature changes with the temperature of its surroundings ectotherm
warm-blooded animals; maintain a nearly constant internal body temperature endotherm
fanlike structures used for steering, balancing, and moving fins
hard, thin plates that cover and protect the body of a fish scales
shallow, canal-like structure filled with sensory organs which allows a fish to detect movement lateral line system
organs that exchange carbon dioxide for oxygen in the water gills
period of inactivity during cold weather in which an animal's body temperature drops and its body processes slow down hibernation
period of inactivity during hot, dry months estivation
egg covered with a shell that provides a complete environment for a developing embryo amniotic egg
mammals that lay eggs with leathery shells monotremes
the way an organism interacts with other organisms and its environment behavior
a behavior that an organism is born with innate behavior
an automatic response that does not involve a message from the brain reflex
a complex pattern of innate behavior instinct
occurs when an animal forms a social attachment to another organism during a specific time period after birth or hatching imprinting
behavior modification in which the response to a stimulus becomes associated with another stimulus conditioning
mammals that give birth to immature young that that usually continue to develop inside an external pouch on the mother marsupials
mamals whose embryos completely develop while inside the mother's uterus placentals
behavior that allows males and females of the same species to recognize each other and prepare to mate courtship behavior
feathers that give a bird its shape and coloring contour feather
instinctive seasonal movement of animals migration
feathers that help to insulate a bird and keep it warm down feather
organism that eats only plants herbivore
organism that eats both plants and animal parts omnivore
organism that eats only other animals carnivore
Created by: lewisch