Advertisements
Advertisements
प्रश्न
What’s the solution?
A person has fainted, and a crowd of people has surrounded him.
Advertisements
उत्तर
When a person faints, he should be immediately given clean and fresh air. Therefore, ask the crowd to move away. Then splash cold water on the face of this man. If he is not reviving, take him immediately to the doctor with the help of others.
संबंधित प्रश्न
The stomach releases hydrochloric acid and ______ juices which act on food.
In human digestive system, bile is secreted by:
(a) pancreas
(b) liver
(c) kidneys
(d) stomach
Which of the following component of our food is digested by an enzyme which is present in saliva as well as in pancreatic juice?
(a) proteins
(b) fat
(c) minerals
(d) carbohydrate
If the teeth are not cleaned regularly, they become covered with a sticky yellowish layer W of food particles and bacteria. Since layer W covers the teeth, the alkaline liquid X secreted by glands Y inside the mouth cannot reach the teeth surface to neutralise the acid formed by the action of organisms Z on sugary food, and hence tooth decay sets in.
(a) What is W known as?
(b) What is (i) X, and (ii) Y?
(c) What are organisms Z?
(d) State one way of removing layer W from the teeth.
What is digestion? Why do only animals require a digestive system?
What do you mean by the absorption of food?
Write true or false for the below statement. Rewrite the false statements correctly.
Water is absorbed in large intestine
Mark odd one in the series:
Circle the odd one.
______ is the common passage of air and food.
