A daily rhythmic activity cycle, based on 24-hour intervals, that is exhibited by many organisms.
Conditioning in which the conditioned stimulus is paired with and precedes the unconditionedstimulus until the conditioned stimulus alone is sufficient to elicit the response.
Interaction between individuals of the same or different species that use one or more of the same resources.
The gradual decline of a response to a stimulus resulting from repeated exposure to the stimulus.
The ability for some plants to move so that they remain either perpendicular or parallel to the sun's rays throughout the day. Also called solar tracking.
Rapid learning that occurs during a brief receptive period, typically soon after birth or hatching, and establishes a long-lasting behavioral response to a specific individual or object, as attachment to parent, offspring, or site.
Complex form of learnt behaviour whereby an individual applies past experience to find solutions to new problems.
Plant movement in which the direction of movement is independent of the direction of the stimulus causing the movement. For example the opening and closing of flowers over a 24 hour period.
A process of behavior modification or conditioning in which the likelihood of a specific behavior is increased or decreased through positive or negative reinforcement each time the behavior is exhibited, so that the subject comes to associate the pleasure or displeasure of the reinforcement with the behavior.
A chemical substance released by an animal that serves to influence the physiology or behavior of other members of the same species.
The different ranks of importance or dominance within an animal group. A pecking order.