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Systems 4.3

TermDefinition
behavior The way an organism reacts to changes in its internal condition or external environment.
instinct a response to a stimulus that is inborn and that an animal performs correctly the first time
mating systems behavior patterns related to how animals mate
pheromone A chemical released by one animal that affects the behavior of another animal of the same species.
typically normally or usually
external fertilization process in which eggs are fertilized outside the female's body
internal fertilization Process in which eggs are fertilized inside the female's body
migration The regular, seasonal journey of an animal from one place to another and back again.
Created by: cheryl.schaeffer
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