Are you looking for DAV Books Solutions then you are in right place, we have discussed the solution of Science class 6 book Chapter 2 Food which is followed in all DAV School. Solutions are given below with proper Explanation please bookmark our website for further updates!! All the Best !!
DAV Class- 6 Science Food Question and Answer
Something To Know
A. Fill in the blanks.
1. Living organisms need food to grow and survive.
2. Vitamins A, D, E and K are soluble in fat whereas Vitamin B and C are water soluble.
3. The deficiency of vitamin B, in the diet, causes a disease called Beri-Beri.
4. Vitamin K helps in clotting of blood.
5. The dietary Fibres constitute roughage.
B. Write True or False for the following statements.
1. Vitamins and minerals are bodybuilding foods.
Answer 1: False
2. Our skin makes Vitamin E in the presence of sunlight.
Answer 2: False
3. Deficiency of phosphorous can lead to anaemia.
Answer 3: False
4. We should eat food that has all its essential components in the right proportions.
Answer 4: True
5. Kwashiorkor occurs due to the deficiency of fat in the diet.
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 1: Starch
2. The deficiency of Vitamin A, in the diet, causes a disease known as—
Answer 2: night blindness
3. Iron is essential for—
Answer 3: formation of haemoglobin
4. A child, who has bow legs, is suffering from a deficiency disease, known as—
Answer 4: rickets
5. The deficiency of proteins, in the diet of children, can cause a disease known as-
Answer 5: marasmus
D. Answer the following questions in brief.
1. Name the important sources of our food.
Answer: The important sources of our food are plants and animals.
2. State the importance of carbohydrates in our diet.
Answer: Carbohydrates are made up of carbon, hydrogen and oxygen. In our food, these are present in the form of sugar and starch. Carbohydrates, in our diet, are a source of energy.
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: (1) sodium (2) iron (3) calcium
5. State the role of calcium in our body.
Answer: The role of calcium in our body is to build healthy bones and teeth.
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 1:
(a) mango and rice
(b) pulses and soybean
(c) milk and fish
(d) fruits and green vegetables
(e) milk and fruits
(f) lemon and guava
2. Describe one test each for detecting the presence of the following in food:
(a) proteins
(b) starch
(c) fats
Answer 2:
(a) 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.
(b) 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.
(c) Test for Fats
Material Required: Paper.
Take the given food item and rub it on a 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 3: Proteins are the building blocks of life. Every cell in the human body contains protein. We need protein to help our bodies repair cells and make new ones.
Proteins are made up of carbon, hydrogen, oxygen, nitrogen; and a small quantity of both sulphur and phosphorous. Proteins help in building up the developing tissues of a growing child. They also take care of the ‘wear and tear’ of the body tissues at all ages.
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 4:
The mineral X is iron which is essential for the formation component Y which is haemoglobin and the disease Z is anaemia.
An anaemic person appears pale and weak. The body shows fatigue, loss of appetite, whitening of nails and swelling of hands and feet.
5. Deficiency of iodine is more common in mountainous regions. Why?
Answer: Deficiency of iodine is more common in mountainous regions because the soil and water are poor in iodine.
6. What is a balanced diet? Why should we take a balanced diet?
Answer: A diet that contains all the nutrients in the right proportion is called a balanced diet. We should take a balanced diet because it consists of all the nutrients which are important for the proper growth and development of the body.
1 thought on “Chapter 2 | Food | Class- 6 DAV Science Solutions”