6. Food and digestion std -4

Science std 4

6. Food and digestion

Time to answer

Fill in the blanks. 

1. Substances found in food which keep our body healthy are known as Nutrients

2. The fibre present in our food is known as Roughage. 

3.calcium help in the formation of teeth and bones. 

4. Vitamin. D  is made in our body with the help of sunlight. 

Write true or false

1. Chew food well before swallowing. (T) 

2.Always eat fried food, sweets and icecream. (F) 

3.Avoid eating green vegetables and fruits (F) 

4. One should not overeat. (T) 

Let us practise

1.Multiple choice questions (MCQs) 

Tick(√) the correct option. 

a. Which of the following statements is not true in the context of saliva? 

Ans. It does not help in digestion. 

b. Which of the following is a boy building food? 

Ans. 4.both 1&2

c. Which of the folly digestive system components is the longest? 

Ans. 1.small intestine

d. Ibesity leads to many diseases like

Ans. 4. Both 1&2

2. Fill in the blanks. 

a. Food pipe is the tube that connects the mouth and the stomach. 

b. Growing children need more of proteins. 

c. Digestion of food in the human body begins in the mouth. 

d. From the stomach, food passes into the small intestine. 

3. Read the following two statements and choose the correct option. 

Statement1. Proteins are body-building foods. 

Statement2. Proteins are required for making new cells in our body. 

Ans. Both statements 1&2 are correct. 

Q4. Short answers type questions. 

a. Write the importance of food. 

Ans. Food gives us the energy we need to work and play. It keeps our body healthy and strong. It also protects us from many diseases. 

b. What is the importance of water in our body? 

Ans. Water helps in regulating the body temperature, digesting food and removing waste from the body. It also help the body to absorb nuy properly. 

C. What is the balanced diet? What will happen if we don't eat balanced diet? 

Ans. A diet that contains all the nutrients in proper quantities is called a balanced diet. If we don't eat balanced diet we could not able to keep our body healthy and fit. 

d. What is the role of villi in digestion? 

Ans. Villi absorb all nutrients from the digested food and send them to the blood.

e. Name any four sources of vitamins and minerals. 

Ans. Oranges, carrots, tomatoes, eggs and milk are sources of vitamins and fresh fruits, milk vegetables sources of minerals.