Plant and Animal Responses

19 terms by pathowes

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Hormone

chemical substance that regulates life functions and behaviors

Auxin

A plant hormone that is involved in cell elongation

Gibberellin

plant hormone that stimulates growth of stems

Cytokinin

plant hormone that causes rapid growth by causing faster cell divisions

Tropism

A growth response of a plant toward (positive) or away (negative) from a stimulus

Nastic Movement

where a plant responds to movement, but is not dependent on the direction of the stimulus. ex. Venus fly trap

Innate Behavior

behavior that an organism is born with and does not have to be learned, such as a reflex or instinct

Reflex

a simple, automatic, inborn response to a sensory stimulus, such as the knee-jerk response

Flight or Fight Response

physiological response of the body to stress, which prepares the individual to take action by stimulating the vital defense system.

Instinct

a complex inherited behavior pattern

Courtship

type of behavior in which an animal sends out stimuli—such as sounds, visual displays, or chemicals—in order to attract a member of the opposite sex

Territoriality

A behavior in which an animal defends a bounded physical space against encroachment by other individuals, usually of its own species. Territory defense may involve direct aggression or indirect machanisms such as scent marking or singing.

Dominance Hierarchy

A linear "pecking order" of animals, where position dictates characteristic social behaviors.

Circadian Rhythm

a daily cycle of activity observed in many living organisms

Migration

the periodic passage of groups of animals (especially birds or fishes) from one region to another for feeding or breeding

Habituation

decreasing responsiveness with repeated stimulation

Imprinting

the process by which certain animals form attachments during a critical period very early in life

Insight

(n) a clear; deep and sometimes sudden understanding of a complicated problem

Learned Behavior

Response to changes in the environment or internal conditions that are acquired during one's lifetime, as opposed to instinctive or automatic responses.

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