Q4 of 33 Page 92

How do the following processes occur? (AS 1)

A pungent odor, makes us close our nose.

Our nose being a sensitive sensory organ, functions to smell things and breath in dust free, fresh air. Upon smelling something pungent in odor, it sends signals to the brain and thus we close our nose to stop smelling the pungent odor.


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4

How do the following processes occur? (AS 1)

The sound waves, collected by the pinna are changed as vibrations.

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How do the following processes occur? (AS 1)

We move our hand away from a hot object.

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Fill in the blanks with suitable words. Then give reasons why the words are suitable. (AS 1)

Choroid layer provides ……………… to the eye.

 5

Fill in the blanks with suitable words. Then give reasons why the words are suitable. (AS 1)

The relationship between the tongue and ……………… is more.