MUST KNOW FOR PLANTS AND ANIMALS Flashcards
Phytochrome
plant protein found in the leaf that controls the timing of flowering.
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need to fill 7 diff types memorise atleast 4
Phytohormone
Chemicals produced by plants that regulate their growth, development, and flowering e.g Auxin (IAA)
Photoperiodism
The regulation plant flowering by day/night length.
Zeitgeber
External Environmental cue by which an internal biological clock is reset. e.g sunlight (or absence of sunlight if nocturnal)
Biological clock
Internal timing system to control activity of animals or plants.
Exogenous
Behaviour driven by external environmental cues ONLY.
Endogenous
Having an internal biological clock to control activity that is entrained.
Free running rhythm
When the activity rhythm continues without external environmental cues. The conditions are constant e.g complete darkness. The actogram normally shows a shift in the pattern.
Home Range
An area outside the territory that an animal uses to find food. This area is NOT DEFENDED.
Co-operative breeding
Offspring receive care not only from their parents, but also from additional group members which increases the chance of survival.
Courtship
Behaviours to attract a mate. Could include colours, dancing, singing.
Kin Selection
Self sacrificing behaviour towards relatives. This promotes survival of the genes relatives have in common (also called Altruism)
Agonistic Behaviour
Threatening behaviour to show hierarchy and reduce actual fighting, shown as dominant and submissive behaviours.
Auxin
Hormone produces in the stem and root meristem (tip) that controls differential cell elongation and plant growth and bending (phototropism, geotropism and thigmotropism).
