Case: Observe the image given below. There are two test tubes (i) and (ii). Test tube (i) contains a starch solution, while test tube (ii) contains starch solution and saliva. Both the test tubes are kept undisturbed for about 20 min. Later, dilute iodine solution (brown in colour) was added to both the test tubes.
In which part of the alimentary canal does the digestion of food begin?

[0.8 Mark]

Stomach

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Small intestine

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Mouth

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Oesophagus

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Solution

The correct option is C Mouth
The digestion of food begins in the mouth due to the presence of saliva. It contains the enzyme salivary amylase, which breaks down starch into simple sugars.

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Q. Case: Observe the image given below. There are two test tubes (i) and (ii). Test tube (i) contains a starch solution, while test tube (ii) contains starch solution and saliva. Both the test tubes are kept undisturbed for about 20 min. Later, dilute iodine solution (brown in colour) was added to both the test tubes.

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[0.8 Mark]

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The correct option is C MouthThe digestion of food begins in the mouth due to the presence of saliva. It contains the enzyme salivary amylase, which breaks down starch into simple sugars.

The correct option is C Mouth
The digestion of food begins in the mouth due to the presence of saliva. It contains the enzyme salivary amylase, which breaks down starch into simple sugars.