DAV Class 6 Science Chapter 2 Food question answer | Solution

DAV Class 6 Science Chapter 2 Food Solution 

If you are searching For Solution of DAV Class 6 Science Chapter 2 Food, then you are at right place . We are providing the complete solution of Second chapter of DAV Class 6 Science. The name of the book of class 6 science prescribed by DAV Public School is The Living World. Food is the Second chapter of this book.  Authentic solution from subject expert will help you in your study.

 A.  Fill in the Blanks.

1.    The living organism need food to Grow and Survive

2.    Vitamin A, D, E, and K are soluble in  Fat , Whereas Vitamin B and C are water soluble.

3.   The deficiency of  Vitamin B , in diet, cause a disease called Beri-Beri.

4.   Vitamin K helps in  clotting of blood.

5.    The dietry fibre constitute Roughage.

B. Write True or False for the following statements.

1.   Vitamin and minerals are body building foods.               False        

2.   Our skin makes Vitamin E in the presence of sunlight.    False             

3.   Deficiency of phosphorous can lead to anaemia.                     False            

4.   We should eat food that has all its essential components In the right proportions.                    True        

 5.Kwashiorkor occurs due to the deficiency of fat in the diet.  False

C. Tick (✓) the correct option.

 1.  When a drop of iodine solution was put on the cut surface of a potato, it turned blue-black in colour . This indicates the presence of -

  (a) Vitamin          
  (b) Fat 
  (c) Protein          
  (d) Starch

      Answer – Starch

2. The deficiency of Vitamin A, in the diet, causes a disease known as -
(a) Scurvy                     
(b) Rickets
(c) Night blindness            
(d) Beri-Beri

 Answer – Night blindness              

3.    Iron is essential for -

 (a) Growth of teeth and bones               (b) Formation of  haemoglobin
 (c) Functioning of thyroid gland
 (d) Making muscles strong

 Answer -  (b) Formation of  haemoglobin

4.  A child, who has bow legs, is suffering from a deficiency disease, known as  –

  (a) Scurvy            
  (b) Rickets
  (c) Goitre              
  (d) Anaemia

  Answer - (b) Rickets

5.  The deficiency of Proteins, in the diet of children, can cause a disease known as -
 (a) Goitre               
 (b) Rickets
 (c) Kwashiorkor    
 (d) Anaemia

  Answer – (c) Kwashiorkor    

 D. Answer the Following Question in brief.

1. Name the important sources of our food?

Answer -  Plants and animals are the important sources of our food.

2. State the importance of carbohydrates in our diet?

Answer – Carbohydrates are the main source of energy for us so, they are very important  in our diet.

3. Name the Vitamin whose deficiency causes the disease of -  
       (a) Nightblindness
       (b) Beri-Beri
       (c)  Scurvy
       (d)  Rickets

Answer -  

(a) Nightblindness   -  Vitamin A 

(b) Beri-Beri               -  Vitamin B

(c)  Scurvy                  -  Vitamin C

(d)  Rickets                 -  Vitamin D

4. Name any three of the minerals needed by our body. 

Answer – Three minerals needed by our body are - Iron, calcium and Phosphorous.

5. State the role of calcium in our body?

Answer – Calcium are important in our body to build healthy bones and teeth.

6. Writhe the full form of PEM and PCM.

Answer -  

PEM - protein Energy Malnutrition 

PCM - Protein Calorie Malnutrition

E. Answer the following Questions

1. Name the sources of each of the following:

(a) Carbohydrate  (b) Proteins

(c)  Fats                    (d) Roughage 

(e)  Vitamin A             (f) Vitamin C                                

Answer -  

 (a) Carbohydrate - Rice, Potato   

 (b) Proteins  -  Egg, Pulses    

 (c)  Fats  -  Ghee, Nuts   

 (d) Roughage  -  Fruits, Green     

                              Vegetables        

 (e)  Vitamin A  -  Cod Liver oil, spinach,                                    Milk    

 (f)  Vitamin  C  -  Citrus fruit, Lemon,                                        Orange, Guava

2. Describe one test each for detecting the presence of the following in food:
(a)  Protein
(b)  Starch
(c)   Fats 

Answer -  (a)  Protein - Material Required : Test Tube, Dropper, Mortar and Pestle,   Concentrated Nitric acid

Procedure : Crush the  bean seeds with the help of mortar and pestle and make a suspension by adding some water. Put little suspension in a test tube. Now add a few drops of concentrated nitric acid into test tube. If the colour of the suspension changed and appears yellow, it indicates presence of Protein.

(b) Starch - Required Material : Test tube, Dropper, Iodine solution

Procedure : Take the small amount of material which is to be tested. Add iodine solution with the help of a dropper . If the colour of the material turns to black/blue, it indicates the presence of starch.              

(c)  Fats - Material required : Paper

Procedure : Rub the material on a dry paper. If you find translucent mark on the paper, it indicates the presence of fat.  

3. Why do We need Proteins and how do thy affect our health?      

Ans - Proteins are body building food. Protein helps in building up the developing tissues. Proteins also repair the damaged tissues. A protein rich diet help in timely growth of children and make them stronger. Deficiency of Protein causes different type of disease like kwashiorkor, Marasmus and improper growth of body.

4. A mineral ‘X’ is essential for the formation of a component ‘Y’, in the blood of a person. The function, of component Y. is to transport oxygen in the body. The deficiency of mineral ‘X’, in the diet of a person, causes a disease Z. Identify X, Y and Z. Also mention the symptoms of disease Z.   

Ans -  

Mineral X - Iron

Component Y - Haemoglobin   

Disease Z - Anaemia

Symptoms of Anaemia -  An anaemic person appear pale and weak. The body shows symptom of fatigue, Whitening of nail and swelling of  hands and feet.

5. Deficiency of iodine is more common in mountainous regions. Why?

Ans - Deficiency of Iodine is more common in mountainous region because the soil and water are poor in Iodine. drinking water of the region is usually deficient of Iodine.

6. What is a balanced diet? Why should we take a balanced diet?

Ans -  A diet with required nutrients in proper ration is called balanced diet. We need balanced diet for the following reasons :

(i)   For energy, proper growth and development of the body.

(ii)  For repair of tissues, protection against infection and for all the metabolic activities.

(iii)  To protect against deficiency disease.