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Question

The organs which give response to external and internal stimuli are known as


A
Chemoreceptors
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B
Receptors
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C
Photoreceptors
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D
Tactile receptors
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Solution

The correct option is A Receptors
Receptors are the cells that detect the changes in chemical and physical conditions of external and internal environment of an animal. 
Chemoreceptors are the specialized receptors for taste and smell, which are activated by changes in the chemical concentration of the substances. 
Photoreceptors are the receptors, which are stimulated by light and other form of electromagnetic radiations. 
Tactile receptors are the rapidly adapting mechanoreceptors that are activated by light touch. 

Biology

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