Topic 8.1 - Responses to the Environment 𖦹⋆｡°✩ Flashcards
how do organisms respond to changes in the environment
through behavioural/ physiological mechanisms
what is a stimulus
an external or internal signal or combination of signals that cause a response from an organism
why do organisms exchange information with one another
in response to internal and external signals
what can change behaviour between organisms
communication (this specifically is called signalling behaviour)
what do signalling behaviours produce and what do they result in
produce changes in behaviours of other organisms and can result in differential reproductive success
what communication mechanisms can animals use
༻ visual
༻ audible
༻ tactile
༻ electrical
༻ chemical signals
what are the uses of communication mechanisms
༻ indicate dominance
༻ find food
༻ establish territory
༻ ensure reproductive success
what does natural selection favour
favours innate and learned behaviours that increase survival and reproductive success
what are innate behaviours controlled by
genetically controlled and can occur without prior experience or training
how are learned behaviours developed
developed through experience
what is involved in cooperative behaviours what do they do
teamwork between organisms of the same species
༻ increases individual fitness
༻ increases the survival of the population
what is the purpose of warning traits
used to discourage predators
what are warning traits called
aposematism
what are some examples of warning traits
markings, behaviours, and/or chemicals
what are some examples of warning traits
༻ coral snakes have distinct banding that indicates the presence of venom to potential predators
༻ skunk arching its back, raising its tail, and stopping its feet before spraying
