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Interspecific
Competition between members of different species
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Migration
Mass movement of organisms between two habitats (seasonal or regular)
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Critical Day Length
Photoperiod above which long-day plants flower
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Parental Care
Invesment of resources by parents in the survivial of offspring
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Nocturnal
Active at night, inactive during the day
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Circatidal
Tidal activity period, approximately 12.4 hours
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Phototropism
Tropic movement in response to light
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Hydrotropism
Tropism movement in response to water
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Orthokinesis
The speed of movement is reated to the intensity of stimulus
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Pecking Order
A social "pecking" order led by Alpha individual
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Klinokinesis
The amount of random turning is related to the intensity of stimulus
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Intraspecific
Competition between members of the sae species
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Stellar Navigation
Using stars to navigate
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Nastic Response
Response to diffuse stimuli that do not come from any particular direction
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Short Day Plant
Plants that flowers when the day length is less than a certain minimum value
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Lek
Area in which males (usually birds) congregate to mate with females
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Auxin
groth hormone which plays an essential role in tropisms
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Batesian mimcry
Resemblance of a harmsless species to one that is poisonous
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Photo-periodism
Regulation by activity by day length
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K-strategist
Organisms who produce and care for a small number of offsping
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Home Range
An are in which an animal or group of animals seeks food, but does not generally defend
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Homing
The ability to fin and return to home site
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Kinesis
Animals only: A non-directional response to a stimulus
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Circalunar
Monthly activity period, 29 days
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Pair Bond
A stable relationship between opposite sexs that ensures mating
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Tropism
Plants only: Plant movement by growth. Direction of response depends on direction of stimulus
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Solar Navigation
Using the sun to navigate
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Crepuscular
Active at dawn and usk
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Entrainment
Process by which an internal clock becomes reset by rhythemic environemental factors
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Thigmotropism
Tropic movement in response to contact
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Klinostat
Wheel to which germinating plants can be attached and rotated
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Phytochrome
Plant protein involved with the measurement of photoperiod
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Mullerian mimicry
Mimicry between unpalatable species
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Navigation
Determinging one's position relative to other locations
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Gibberellin
Plant growth substance that promotes elongation so shoots
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Free Running
Behaviour rhythm proceeding independently of external changes
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r- strategist
Organism which produces large numbers of offsring but gives them little cares
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Learning
Behavour that is modified by experience
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Exogenous
Behaviour driven by external stimuli
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Instinct
Complex behaviour that is not modified by experience
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Long Day Plant
Plant that flowers when day length exceeds a certain minimum values
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Territory
Area that is defended by an animal
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Biological Clock
An internal timing system which controls (to some extent) timing of activities of organisms
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Endogenous
Behaviour driven by internal stimuli
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Zeitgeber
External environmental cue by which an internal clock is reset
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Chemotropism
Tropic movement in repsonse to a chemical
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Mimicry
Adaptive resmemblance between unrelated species
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Circannual
Yearly activity perioud, approximately 360 days
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Day-neutral plant
Plant that flowers independently of day length
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Diurnal
Active during the day, inactive at night
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Circaduan
Daily acticity, approximately 24 hours
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Taxes
The movement of animal towards or away from stimulus from one direction
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Gravitropism
Tropic movement in respnse to gravity
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