The Diversity of Living Things Flashcards
What is anything that causes a reaction or change in an organism?
Stimulus
What is an organism’s reaction to a stimulus?
Response
What is a set of actions taken by an organism in response to a stimulus?
Behavior
What is the response of an organism to a stimulus?
Homeostasis
What is a chemical signal that affects activity in an organism?
Hormone
What is the movement of organisms toward or away from an external stimulus?
Taxis
What is the movement of a plant in response to an external stimulus?
Tropism
What is an animal response to stimulus, resulting in a lowered state of activity?
Hibernation
What is a group of organisms that can reproduce only with one another?
Species
What is the process by which humans breed organisms for certain characteristics?
Artificial Selection
What is a feature that helps an organism to better survive in its environment?
Adaption
What are differences in inheritable traits that occur in individuals within a species?
Variation
What is the process by which populations gradually change over time?
Evolution
What is a group of the same species that live in the same place at the same time?
Population
What is the tool used to identify organisms that have been classified by physical characteristics?
Dichotomous Key