5. Control & Coordination
Every organism has little or more awareness to the different factors of the environment mainly due to the presence of certain sensitive structures in the body called sense organs or receptors.
The sense organs are generally destined to receive only one kind of stimulus and not any other. The most common receptors are
Photoreceptor : Eye
Phonoreceptor : Ear
Guastatoreceptor : Tongue
Tangoreceptor : Skin
Olfactoreceptor : Nose
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