Structural features with a common evolutionary origin are called homologous structures.They can be similar in arrangement or function, showing that species evolved but some kept similar characteristics to those of its ancestors.
Hope this helps!
-Payshence xoxo
In physiology, a stimulus (plural stimuli) is a detectable change in the internal or external environment. The ability of an organism or organ to respond to external stimuli is called sensitivity. When a stimulus is applied to a sensory receptor, it normally elicits or influences a reflex via stimulus transduction.
