July 25, 2021
In this IBDP Biology blog post, it will include the differences and meanings between innate and learned behaviour.
Distinguishing between innate and learned behaviour
Innate behavior
- behaviour shown in all normal members of a species
- despite any variation in environmental influences
Learned behavior
- modification of behavior as a result of experience
Experiments to investigate innate behaviour
Taxis:
- locomotion of an organism
- in a particular direction
- in response to an external stimulus
Examples:
- Planaria moves towards food = positive chemotaxis
- Euglena moves towards light = positive phototaxis
Kinesis:
- the movement (as opposed to growth) of an organism or a cell
- in response to a stimulus
- such that rate depends on intensity, but not direction, of the stimulus
Example:
- woodlice move about less in optimum, humid, conditions, and more in unfavorable, dry conditions
That is all!
References:
- https://www.google.com/url?sa=i&url=https%3A%2F%2Fcommons.wikimedia.org%2Fwiki%2FFile%3AFigure_45_07_07.jpg&psig=AOvVaw2ZbRnsuLMdXQ5E-0GWAoWI&ust=1627294437552000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCOi616n-_fECFQAAAAAdAAAAABAI
- https://www.google.com/url?sa=i&url=http%3A%2F%2Fib.bioninja.com.au%2Foptions%2Foption-a-neurobiology-and%2Fa4-innate-and-learned-behav%2Finnate-behaviour.html&psig=AOvVaw0-lnH8z5tLXYkzkzbEzTy0&ust=1627291596471000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCJCL8rv-_fECFQAAAAAdAAAAABAD
Drafted by Venetia (Biology)