A ............ is a sensory receptor, or more accurately the receptive portion of a sensory neuron, that codes absolute and relative changes in temperature, primarily within the innocuous range.

Chemoreceptor

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Thermoreceptor

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Photoreceptor

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None of the above

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Solution

The correct option is B Thermoreceptor
B. Thermoreceptor.
Solution: A thermoreceptor is a sensory receptor. The sensory capacity to discover hot and cold temperatures allows automatic homeostatic mechanisms in warm-blooded animals to adjust internal temperatures to keep them stable at aspired levels; it allows cold-blooded animals to adjust their behaviour in ways favourable to those organisms.

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Similar questions

One of the following gives the correct sequence of the components in a reflex arc. This is :

(a) Receptors $\to$ Muscle $\to$ Sensory neuron $\to$ Motor neuron $\to$ Spinal cord

(b) Receptors $\to$ Motor neuron $\to$ Spinal cord $\to$ Sensory neuron $\to$ Muscle

(d) Receptors $\to$ Sensory neuron $\to$ Spinal cord $\to$ Motor neuron $\to$ Muscle

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