Olfactory receptors are present in the:

perennial membrane

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mucus membrane

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nostrils

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Olfactory membrane

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Solution

The correct option is B mucus membrane
Our external nose has two nostrils. They lead to the nasal cavity. The nasal cavity is lined with a mucous membrane and minute hair. Olfactory receptors are present in the mucous membrane. Receptors present at the base of the skin lining, the inner walls of the nose, are highly sensitive to odour chemicals.

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(d) Olfactory receptors detect taste and gustatory receptors smell

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Reason (R): It has eyes but still can sense light through light sensitive cells (olfactory - receptors) present in their skin.

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