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प्रश्न
If we were to say that “digestion begins in the mouth”, how would you explain this. Write.
उत्तर
The salivary glands are present in the mouth. Saliva contains digestive enzymes. The enzyme from saliva helps in breaking complex sugars into simple sugars. Thus, it can be said that digestion begins in the mouth.
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संबंधित प्रश्न
Collect a few food items having different kinds of tastes. Play a game with your friends as Jhumpa and Jhoolan did. Tell your friend to taste the food and ask -
How did it taste? What was the food item?
Collect a few food items having different kinds of taste. Play a game with your friends like Jhumpa and Jhoolan did. Tell your friend to taste the food and ask -
On which part of the tongue could you get the most taste - in front, at the back, on the left or right side of the tongue?
Why don’t you make sounds that describe some tastes?
From your expressions and sounds ask your friends to guess what you might have eaten.
How do you feel when you are very hungry? How would you describe it? For example, sometimes we jokingly say, “I am so hungry I could eat an elephant!”
How do you come to know that you are hungry?
Have you ever tasted glucose? How does it taste? Tell your friends.
Have you or anyone in your family been given a glucose drip? When and why? Tell the class about it.
Look at Nitu’s picture and describe what is happening. How is the glucose drip being given?
Why do you think that the food of Rashmi and Kailash was not proper?
Chew it or chew it well: What’s the difference?
Try this together in class:
Each of you takes a piece of bread or roti or some cooked rice.
Put it in your mouth, chew three to four times and swallow it.
Did the taste change as you chewed it?
Now take another piece or some rice and chew it thirty to thirty-two times.
Was there any change in the taste after chewing so many times?
