DAV Class 6 Science Chapter 2 Question Answer – Food

The DAV Class 6 Science Solutions and DAV Class 6 Science Chapter 2 Question Answer – Food are essential study tools for DAV public school students in Class 6.

DAV Class 6 Science Ch 2 Question Answer – Food

DAV Class 6 Science Ch 2 Solutions – Food

Something To Know

A. Fill in the blanks.

Question 1.
Living organisms need food to ______ and ______
Answer:
Grow, survive

Question 2.
Vitamins A, D, E and K are soluble in ______ whereas Vitamins B and C are______ soluble.
Answer:
Fat, water

Question 3.
The deficiency of ______ in the diet, causes a disease called Beri-Beri.
Answer:
Vitamin B

Question 4.
Vitamin K helps in ______ of blood.
Answer:
Clotting

Question 5.
The dietary fibres constitute ______
Answer:
Roughage

B. Write True or False for the following statements.

1. Vitamins and minerals are body building foods.
2. Our skin makes vitamin E in the presence of sunlight.
3. Deficiency of phosphorus can lead to anaemia.
4. We should eat food that has all its essential components in the right proportion.
5. Kwashiorkor occurs due to the deficiency of fat in diet.
Answer:
1. Vitamins and minerals are body building foods. (False)
2. Our skin makes vitamin E in the presence of sunlight. (False)
3. Deficiency of phosphorus can lead to anaemia. (False)
4. We should eat food that has all its essential components in the right proportion. (True)
5. Kwashiorkor occurs due to the deficiency of fat in diet. (False)

C. Tick (✓) the correct option.

1. When a drop of iodine 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:
(d) starch

2. The deficiency of Vitamin A, in the diet, causes a disease known as
(a) scurvy
(b) rickets
(c) nightblindness
(d) Beri-beri
Answer:
(c) nightblindness

3. Iron is essential for
(a) growth of teeth and bones
(b) formation of haemoglobin
(c) functioning of the 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) marasmus
(b) rickets
(c) kwashiorkor
(d) anaemia
Answer:
(c) kwashiorkor

D. Answer the following questions in brief.

Question 1.
Name the important sources of our food.
Answer:
Plants and animals are the important sources of food. We get cereals, pulses, fruits, vegetables and spices from plants. We get milk, eggs and meat from animals. Additionally, we also get honey from animals.

Question 2.
State the importance of carbohydrates in our diet.
Answer:
Carbohyrates are energy giving food. We need carbohydrates in our diet so that we can get energy. In a balanced diet, carbohydrate is always taken in the largest amount.

Question 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

Question 4.
Name any three of the minerals needed by our body.
Answer:
The main minerals needed by our body are: calcium, phosphorus, iron and iodine.

Question 5.
State the role of calcium in our body.
Answer:
Calcium is an important component of bones and teeth. Calcium also helps in working of different muscles in the body.

Question 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.

Question 1.
Name two sources of each of the following:
(a) Carbohydrates
Answer:
Rice and wheat

(b) Proteins
Answer:
Pulses and meat

(c) Fats
Answer:
Oil and butter

(d) Roughage
Answer:
Green leafy vegetables and whole grains

(e) Vitamin A
Answer:
Carrot and Papaya

(f) Vitamin C
Answer:
Orange and lemon

Question 2.
Describe a test for each for detecting the presence of the following in food:
(a) Proteins
Answer:
For this, you need concentrated nitric acid Take some bean seeds and crush them with mortar and pestle. Use water to make a suspension from crushed seeds of beAnswer: Take a little amount of this suspension in a test tube. Add a few drops of concentrated nitric acid to the suspension. The colour of suspension changes to yellow. This indicates the presence of protein.

(b) Starch
Answer:
For this, take iodine tincture.
Take boiled rice or boiled potato. Mash the boiled potato and add some water to make a fine paste. Add a few drops of iodine tincture on this paste. The colour of paste becomes black- blue. This indicates the presence of starch.

(c) Fats
Answer:
Take some potato chips (fried). Keep them between tissue paper and crush them. Be careful not to damage the tissue paper. After that, take out the tissue paper and spread it. See the tissue paper against a source of light. You will notice translucent patches on the paper. This patches suggest the presence of fat in the food.

Question 3.
Why do we need proteins and how they affect our health?
Answer:
Proteins are body building food and hence we require protein in our diet. Protein is required by the body for growth and repair. A protein rich diet ensures that a child shows timely growth and becomes stronger. Deficiency of protein in diet hampers the growth of the child.

Question 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:
X is iron, Y is haemoglobin and Z is anaemia. Symptoms of anaemia include a general weakness and pale skin.

Question 5.
Deficiency of iodine is more common in mountainous regions. Why?
Answer:
The drinking water in mountainous region is usually deficient in iodine. That is why iodine deficiency is more common in mountainous regions.

Question 6.
What is a balanced diet? Why should we take a balanced diet?
Answer:
A diet which contains all the required nutrients in proper ratio is called balanced diet. We need to take a balanced diet for various reasons; like getting energy for day to day work, proper growth and for maintaining proper health.

Value Based Questions

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.

Question 1.
State the values displayed by Rohini.
Answer:
Concern for others

Question 2.
Iodine is needed for the synthesis of a hormone. Name this hormone and the gland that produces it.
Answer:
The hormone is thyroxin and the gland is thyroid gland.

Question 3.
Ask the elders in the family, or the seniors in the school/locality, of any incident in which a person has helped a large number of people in solving, or minimising, a general problem. Share your findings with your classmates.
Answer:
Do it yourself.

Something To Do

Question 1.
List examples of food items, belonging to the different food groups, listed in the following table.
Answer:

Carbohydrate Rich Food Items	Protein Rich Food Items	Food Items Rich in Fats	Dairy Products	Food Items that Provide Minerals and Vitamins
Rice, potato, sugar, chapatti, sweet potato	Dal, beans, mutton, fish, eggs	Butter, ghee, mutton, fried chips	Milk, curd, butter, cheese, ghee	Spinach, orange, cabbage, mango, lemon, radish, fish

Question 2.
Prepare your own meal plan, by choosing the food items from the above table, so that they form a balanced diet for you.
Answer:

Breakfast meal	Lunch meal	Dinner meal
Chapatti and vegetable	Rice, chapatti, dal, vegetable, salad, curd	Rice, chapatti, dal, vegetable, salad, curd
Bread and omlette, milk, butter	Rice, mutton/chicken, salad, curd	Paratha. fish, salad, fruit juice

Question 3.
Perform a test to find out if there is any starch in the sweets prepared from milk/ milk products like curd, etc.
Answer:
Perform the iodine test on milk or milk products. Remember that presence of starch in a food is indicated by black-blue colour when iodine tincture is added to food item.

DAV Class 6 Science Chapter 2 Solutions – Food

I. Fill in the blanks.

Question 1.
Food provides ______ which is needed by a living being to do work.
Answer:
Energy

Question 2.
Potato is a good source of ______
Answer:
Carbohydrate

Question 3.
Pulses are good source of protein for ______diet.
Answer:
Vegetarian

Question 4.
Cow and ______ are the main sources of milk in India.
Answer:
Buffalo

Question 5.
Honeybees prepare honey from ______
Answer:
Nectar

Question 6.
Protein is required by body for ______ and repair.
Answer:
Growth

Question 7.
Translucent test is done to show the presence of ______ in a food.
Answer:
Fat

Question 8.
Vitamin ______ helps in maintaining healthy gums.
Answer:
C

Question 9.
Deficiency of ______ leads to anaemia.
Answer:
Iron

Question 10.
______ Calcium makes our stronger.
Answer:
Bones

II. Tick (✓) the correct option.

1. Which of the following is an energy giving food?
(a) Carbohydrate
(b) Protein
(c) Vitamins
(d) Minerals
Answer:
(a) Carbohydrate

2. Which of these is the main source of carbohydrate in our food?
(a) Rice
(b) Dal
(c) Vegetable
(d) Mutton
Answer:
(a) Rice

3. Which of these is a dairy product?
(a) Cheese
(b) Yoghurt
(c) Butter
(d) All of the above
Answer:
(d) All of the above

4. Which of these is supposed to be the best source of vitamin A?
(a) Spinach
(b) Orange
(c) Carrot
(d) Potato
Answer:
(c) Carrot

5. Which of these is supposed to be the best source of iron?
(a) Spinach
(b) Orange
(c) Papaya
(d) Apple
Answer:
(a) Spinach

6. Which component of food helps in proper clearing of bowel?
(a) Carbohydrates
(b) Fats
(c) Protein
(d) Roughage
Answer:
(d) Roughage

7. Kwashiorkor usually happens in children of which age group?
(a) 1 to 3 years
(b) 3 to 5 years
(c) 5 to 7 years
(d) Older than 10 years
Answer:
(a) 1 to 3 years

8. Milk is a good source of which mineral?
(a) Iron
(b) Phosphorus
(c) Calcium
(d) Iodine
Answer:
(c) Calcium

9. Which of these is an example of citrus fruits?
(a) Apple
(6) Cherry
(c) Orange
(d) Papaya
Answer:
(c) Orange

10. Eating too much oily food can lead to which condition?
(a) Marasmus
(b) Rickets
(c) Beri-beri
(d) Obesity
Answer:
(d) Obesity

III. Answer these questions.

Question 1.
Why do living beings need food?
Answer:
Living beings need food for growth and survival. They need food for getting energy so that they can do work. They also need food for fighting against various diseases.

Question 2.
Give some examples of food which come from roots of plants.
Answer:
Examples of food from roots are: Carrot, radish, turnip, sweet potato, etc.

Question 3.
Why should a child of your age take milk on a daily basis?
Answer:
Milk is a good food with many nutritive benefits. Milk is a good source of calcium and thus it is good for our bones and teeth. Milk also contains some vitamins which are required by the body. So, a child of my age should take milk on a daily basis.

Question 4.
Classify food into main categories.
Answer:
Food can be classified into following categories:
(a) Energy giving food
(b) Body building food
(c) Protective food

Question 5.
Explain the role of protein in our body.
Answer:
Protein is an important component of cells and tissues. For growth of the body, new cells need to be made. For this, protein provides the raw materials. For repair of wear and tear also, new cells need to be made and thus protein helps in repairing the worn out body parts as well.

Question 6.
How will you perform translucent test to check the presence of fat in a given food sample?
Answer:
For this, take a sheet of paper. Rub the given food sample on the paper. Hold the paper against light. Presence of translucent patches on the paper shows the presence of fat in the given food sample.

Question 7.
What is the role of Vitamin C and what are its sources?
Answer:
Vitamin C helps in maintaining healthy gums and teeth, bones and bone joints. Vitamin C is found in citrus fruits like orange and lemon. It is also found in guava and amla.

Question 8.
What is the benefit of sitting in sunshine for our body?
Answer:
Vitamin D is made by our body when skin is exposed to sunshine. Vitamin D is good for our bones. So, sitting in sunshine helps in making our bones stronger.

IV. Projects

Question 1.
Make a list of food which you ate on the previous day for breakfast, lunch and dinner. Find out if you could get all the necessary nutrients from your food.
Answer:
Do it yourself.

Question 2.
One of your friends is fond of eating chips and pakoda. How will you explain the dangers of eating such kind of food to him?
Answer:
Explain the potential of obesity by eating oily food. Explain the harmful effects of obesity.