DAV Class 6 Science Solution Chapter 2 Food
DAV School Books Class 6 Science Solution Chapter 2 Food all Question Answer. DAV Class 6 2nd Chapter Food full Chapter explanation by expert teacher.
DAV School Books Class 6 Science Solution Chapter 2 Food:
(A) Fill in the blanks.
Answer: (1) grow and survey.
Answer: (2) Fat, water.
Answer: (3) Vitamin B.
Answer: (4) cloting.
Answer: (5) roughage.
B.) Write true or false for the following sentences:
Answer: (1) False.
Answer: (2) False.
Answer: (3) False.
Answer: (4) True.
Answer: (5) 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
Answer: (d) Starch.
(2) The deficiency of Vitamin A, in the diet, causes a disease known as
Answer: (c) night blindness.
(3) Iron is essential for
Answer: (b) formation of haemoglobin.
(4) A child, who has bow legs, is suffering from a deficiency disease, known as
Answer: (c) rickets.
(5) The deficiency of proteins, in the diet of children, can cause a disease known as
Answer: (c) kwashiorkor.
D.) Answer the following questions in brief.
1.) Name the important sources of our food.
Answer: The important sources of food are as follows –
Plants – we get fruits, vegetables, cereals, grains, pulses, oils and spices from plants so plants are the important sources of food.
Animals – we get milk, eggs and meat from the animals.
2.) State the importance of carbohydrates in our diet.
Answer: Importance of carbohydrates in our diet – carbohydrates are an important source of energy. They are made up of carbon, hydrogen and oxygen in food in the form of starch.
3.) Name the vitamin whose deficiency causes the disease of
a.) night blindness
b.) beri-beri
c.) scurvy
d.) rickets
Answer:-
a.) vitamin a
b.) vitamin b
c.) vitamin c
d.) vitamin d
(4) Name any three of the minerals needed by our body.
Answer: Phosphorus, Calcium, Iron.
(5) State the role of calcium in our body.
Answer: Role of calcium in our body is calcium is used for the formation of bones and teeth in our body due its deficiency bones become weak and fragile.
(6) Write the full forms of the terms PEM and PCM.
Answer: PEM – protein energy malnutrition PCM – protein calorie malnutrition
E.) Answer the following questions.
1.) Name two sources of each of the following:
(a) Carbohydrates
(b) Proteins
(c) Fats
(d) Roughage
(e) Vitamin A
(f) Vitamin C
Answer:-
Carbohydrates – fruits like banana and cereals like wheat Protein – pulses and soybean Fats – oils and milk
Roughage – fruits and vegetables Vitamin A – cod liver oil and ghee. Vitamin C – orange and lemon.
(2) Describe one test each for detecting the presence of the following in food:
(a) proteins
(b) starch
(c) fats
Answer: Test that can perform to check following in food –
- Test for protein –
Materials Required: Mortar and pestle, test tube, dropper, concentrated nitric acid.
Procedure: Crush some bean seeds in a mortar and pestle. Make a suspension using water. Take a little of this suspension in a test tube. Very carefully, add a few drops. of concentrated nitric acid to it. If the colour of this suspension changes to yellow, it indicates the presence of proteins.
- Test for starch –
Materials Required: iodine solution, test tube, dropper.
Procedure: Take the material which is to be tested. Add iodine solution with the help of a dropper. If it turns blue-black, it indicates the presence of starch.
- Test for fats – Material Required: Paper.
Proc Take the given food item and rub it on dry paper. If fat is present in it, it will leave a translucent mark on the paper.
(3) Why do we need proteins and how do they affect our health?
Answer:- Need of protein –
Protein helps in building developing tissue in the body.
They also take care of wear and tear of the tissue at all ages. Their deficiency causes Kwashiorkor and marasmus
(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.
Answer: Suppose X is iron which is important in the formation of component Y that is hemoglobin that transport oxygen in the body And Z is anemia that is caused due to deficiency of X, that is iron.
Symptoms of anemia – loss of appetite, whitening of nails, swelling on hands and legs, person looks like weak
(5) Deficiency of iodine is more common in mountainous regions. Why?
Answer: In the mountain region the soil and water is poor in iodine. That’s why there is deficiency of iodine in the mountain region.
(6) What is a balanced diet? Why should we take a balanced diet?
Answer:- The diet which contains all the essential components which are required for the body in equal proportions is called balance.
We should take a balanced diet because it consists of all the nutrients which are important for the growth of the body.
Value based questions
Q.) Rohini had to go to a remote village for one of her photographic assignments. She observed that a large number of the villagers there had swelling in their neck regions. She advised the villagers to use iodised salt and to include fruits and vegetables in their diet, whenever possible. On her way back, she contacted the relevant authorities and ensured that the villagers get a regular supply of iodised salt.
(1) State the values displayed by Rohini.
Answer: Rohini shows acts of kindness towards people.
(2) Iodine is needed for the synthesis of a hormone. Name this hormone and the gland that produces it.
Answer: Thyroxine produced by thyroid gland.
Something To Do
(1) List examples of food items, belonging to the different food groups, listed in the following table.
- Carbohydrate Rich Food Items: Fruits, cereals, pulses, vegetables, grains.
- Protein Rich Food Items: egg, milk, yoghurt, cheese, nuts.
- Food Items Rich in Fats: Cheese, Dark chocolate, eggs, nuts, fish.
- Dairy Products: Milk, yoghurt, curd, cheese, paneer
- Food Items that provide Minerals and Vitamins: meat, cereals, fish, milk, fruit and vegetables.
(2) Prepare your own meal plan, by choosing the food items from the above table, so that they form a balanced diet for you.
- Breakfast Meal: sprouts, milk, eggs, fruits, etc.
- Lunch Meal : Vegetables, curd, paneer, etc.
- Dinner Meal : oats, daliya, hodgepodge, etc.
(3) Perform a test to find out if there is any starch in the sweets prepared from milk/milk products like curd, etc.
Answer:-
- Materials Required: lodine solution, test tube, dropper.
- Procedure: Take the material which is to be tested. Add iodine solution with the help of a dropper. If it turns blue-black, it indicates the presence of starch.
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