Stimuli and Responses: Responses in Plants and Animals

Organisms survive better when they can respond to environmental changes.
Growth factors in flowering plants regulate growth in response to directional stimuli, moving from growing areas to other tissues.
Cell elongation in roots and shoots of flowering plants is affected by different concentrations of indoleacetic acid (IAA), explaining gravitropism and phototropism.
Taxes and kineses are simple responses that help mobile organisms stay in favourable environments.
The benefits of a simple reflex are demonstrated by a three-neurone simple reflex.
Specific details of the spinal cord and dorsal and ventral roots are not needed.
It is suggested to draw a plant diagram to demonstrate the effects of auxin.
Additionally, draw a diagram to illustrate the nervous response in animals, showing both a reflex and a normal response.