Animal and Plant Terms

Rhythm with a period of about one tidal cycle when under constant environmental conditions.

An innate internal mechanism controlling the physiological activities of an organism (timing)

Relationship between two organisms where both benefit (e.g. cleaner fish and sharks).

Process by which an internal clock becomes reset by rhythmic environmental conditions.

Plant that flowers when day length exceeds a certain minimum value.

Plant that flowers when day length is less than a certain minimum value.

A graph showing the activity of an organism over a period of time.

Mass movement of a species, usually a two way journey at regular intervals, long distances.

Ability of an organism to find its way home over unfamiliar territory.

what type of tropism is shown in this picture?

Night length below which long-day plants flower and above which short-day plants flower.

Prefix for animal or plant responses to light, chemicals, gravity and water current IN ORDER

You can put a positive or negative prefix for a kinesis responseshown by an animal

Behaviour which is not learned over time - behaviour the organism is born with (coded in genes)

Rhythm with a period of about a lunar month when under constant environmental conditions.

Active at night, active at day, active at dawn and dusk (in order)

A series of signals exchanged between males and females, often ending in mating.

Rhythm with an internal origin, independent of changes in the external environment.

When several unpalatable organisms resemble each other to gain benefit - eg

Reversable movements in plant parts-response to the presence or absence of external stimuli

Prefix for behaviour responses to touch

Rhythm with a period of about a day when under constant environmental conditions.

Using the sun to find the direction of migration. Must compensate for the suns daily movement.

When a harmless organism mimics a dangerous organism to gain benefit

You can put a positive or negative prefix for a nastic response in plants

Growth hormone which plays an essential part in tropisms – causes cell elongation.

Movement of an animal - direction of the movement depends on the direction of the stimulus.

Peaks of an endogenous rhythm are advanced or retarded in response to a changed exogenous cue.

Situation when demand for a resource (e.g food) exceeds supply, both parties -vely affected.

Aggressive behaviour between members of the same species. Can result in death or grevous injury

Members of a group arranged in positions of dominance or subordinance to reduce aggression.

Orientation of an animal - rate of the movement depends on the intensity of the stimulus.

Differences in sexes, not including the sexual organs (e.g. tooth size, plumage, size, pelvis).

Behaviour (e.g. head bowing in seagulls) showinga status lower than another individual.

Plant that flowers when day length is less than a certain minimum value.

Rhythm with a period of about a year when under constant environmental conditions.

General term for behaviours which help the group survive (e.g.breeding, territory, heirachy).

Ritualised behaviour to assert dominance (e.g. showing teethor opening the beak)

An external environmental cue "Time giver" by which an internal clock is reset.

Behaviour (e.g. standing erect) which shows a status higher than another individual.