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Question
Why do we call saliva a digestive juice?
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Solution
Saliva is the juice secreted by the salivary glands. Saliva helps to make bolus from the food that we eat. Saliva also contains a starch digesting enzyme. This enzyme turns starch into sugar. Therefore, saliva is called a digestive juice.
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The diagram below represents the simplified pathway of the circulation of blood. Study the same and answer the questions which follow:

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(v) Draw a diagram of the different blood cells as seen in a smear of human blood.
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The blood vessel which supplies blood to the liver.
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