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प्रश्न
Boojho and Paheli were eating their food hurriedly so that they could go out and play during recess. Suddenly, Boojho started coughing violently. Think of the reasons why he was coughing and discuss them with your friends.
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उत्तर
The pharynx is a common passage for both food and air. A cartilaginous flap called the epiglottis closes the opening of the windpipe while eating and thus prevents the entry of food into the windpipe. Sometimes, when one eats hurriedly, talks or laughs while eating, the epiglottis remains open. The food may enter the windpipe and coughing helps to clear it.
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संबंधित प्रश्न
The main steps of nutrition in humans are ______, ______, ______, ______ and ______.
Match the items of Column I with those given in Column II:
| Column I | Column II |
| Food components | Product(s) of digestion |
| Carbohydrates | Fatty acids and glycerol |
| Proteins | Sugar |
| Fats | Amino acids |
Which of the following are energy foods?
In amoeba, food is digested in the ____________.
A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains
Name the following :-
Organisms that can prepare their own food
Name the following :-
Organisms that cannot prepare their own food
Choose the odd one out from the group and give reason.
Tongue is attached at the _____________ to the floor of the mouth cavity and is free at the _____________.
Find out what vitamins are and get the following information.
- Why are vitamins necessary in the diet?
- Which fruits or vegetables should be eaten regularly to get vitamins?
Write a one-page note on the information collected by you. You may take the help of a doctor, a dietician, your teacher or any other person, or from any other source.
