Plant responses and Animal behaviour

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Abscission
Leaf or fruit fall because of death of cells in the abscission layer in the stalk
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Allelopathy
Chemical inhibition of one species by another. Basically the same as antibiosis, except that the definition emphasises the chemical connection
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Dormancy
when seeds will not germinate unless certain conditions happen. (Cutting off the coat or long periods of cold)
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Endogenous
Internal rhythm that occurs when there are no external cues. It is caused by a biological clock
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Exogenous
Rhythm that continues only when external cues are present
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Antibiosis
Interspecific relationship where one organism is harmed, but the other is unaffected
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Batesian mimicry
A harmless animal that looks like a poisonous one.
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Ambivalence
When a gesture contains both dominance and submission
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Entrainment
Forcing the free running period to follow an external pattern.
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Interspecific
Between two different species
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Intraspecifc
Within one species
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Kinesis
A whole body response of animals where the response is independant of the stimulus direction, but may depend on the intensity of the stimulus.
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Mullerian mimicry
Several poisonous species have similar colourations
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Nastic movement
A plant response that is independent of the direction of stimulus. It is not a growth response, usually involves turgor (cell water) pressure.
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photoperiodism
response of plants to lengths of day(or night)
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Phytochrome
PLant pigment that controls the photoperiodic response.
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Taxis
Movement of an animal or part of its body towards or away from a directional stimulus
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Tropism
a plant growth response to a directional stimulus
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Vernalisation
Exposure of seeds to a period of cold to break seeds' dormancy
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Other cards in this set

Card 2

Front

Chemical inhibition of one species by another. Basically the same as antibiosis, except that the definition emphasises the chemical connection

Back

Allelopathy

Card 3

Front

when seeds will not germinate unless certain conditions happen. (Cutting off the coat or long periods of cold)

Back

Preview of the back of card 3

Card 4

Front

Internal rhythm that occurs when there are no external cues. It is caused by a biological clock

Back

Preview of the back of card 4

Card 5

Front

Rhythm that continues only when external cues are present

Back

Preview of the back of card 5
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