The DAV Class 4 Science Book Solutions and DAV Class 4 Science Chapter 7 Question Answer – Food are essential study tools for DAV public school students in Class 4.
DAV Class 4 Science Chapter 7 Question Answer – Food
DAV Class 4 Science Ch 7 Question Answer – Food
Something To Know
A. Fill in the blanks.
Question 1.
Carbohydrates and fats are the nutrients which provide ______ to our body.
Answer:
energy
Question 2.
Foodstuffs, containing ______ are called body building foods.
Answer:
protein
Question 3.
______ and ______ are sources of vitamin C.
Answer:
Orange, lemon
Question 4.
We can get ______ from iodised salt.
Answer:
iodine
Question 5.
The roughage in our diet, helps the body to get rid of ______ food.
Answer:
undigested.
B. Write True or False for the following statements.
1. All nutrients are important for our body.
2. Our food should include more than one source of protein.
3. Our body needs vitamin C for healthy bones and teeth.
4. A balanced diet does not contain all the nutrients.
5. Old people, who are not very active, should eat more fat and carbohydrates.
Answer:
1. All nutrients are important for our body. (True)
2. Our food should include more than one source of protein. (True)
3. Our body needs vitamin C for healthy bones and teeth. (False)
4. A balanced diet does not contain all the nutrients. (False)
5. Old people, who are not very active, should eat more fat and carbohydrates. (False)
C. Tick (✓) the correct option.
1. Calcium, iron and phosphorus are examples of
(a) minerals
(b) vitamins
(c) proteins
(d) carbohydrates
Answer:
(a) minerals
2. Protective foods are needed by our body for
(a) energy
(b) warmth
(c) health
(d) growth
Answer:
(c) health
3. A person, doing a lot of physical work, needs more of
(a) vitamins
(b) minerals
(c) proteins
(d) carbohydrates
Answer:
(d) carbohydrates
4. Sugar contains mainly
(a) carbohydrates
(b) vitamins
(c) minerals
(d) fats
Answer:
(a) carbohydrates
5. The vitamin, that helps us to have good eye-sight, is vitamin
(a) A
(b) B
(c) C
(d) D
Answer:
(a) A
D. Answer the following Questions in brief.
Question 1.
Name the nutrients present in energy giving foods.
Answer:
Carbohydrates and fats
Question 2.
State the main role of proteins for our body.
Answer:
Growth and repair
Question 3.
Name two food items, obtained from animals, that are good sources of proteins.
Answer:
Meat and milk
Question 4.
Name two minerals that are required for healthy bones and teeth. Also, mention one food source that contains both of them.
Answer:
Calcium and phosphorus are the minerals which are required for healthy bones and teeth. Milk contains both these minerals.
Question 5.
Why are vitamins and minerals called ‘protective foods’?
Answer:
Vitamins and minerals protect our body from diseases. Hence, they are called protective nutrients.
E. Answer the following Questions.
Question 1.
What are nutrients? Why are they necessary for our body?
Answer:
Nutrients are the substances present in our food. They provide us energy, help us grow, keep us healthy and disease free. So, nutrients are necessary for our body.
Question 2.
Why should we eat a balanced diet?
Answer:
A balanced diet contains all the nutrients in right amount. Our body needs all the nutrients to function properly. Hence, we should eat a balanced diet.
Question 3.
Why is it advisable to eat food items like whole fruits, salads and whole grains.
Answer:
Whole fruits, salads and whole grains provide roughage in the food. Roughage is necessary for proper functioning of digestive system. Roughage also helps in eliminating undigested food. So, it is advisable to eat these food items.
Question 4.
Why do we say that water is essential for proper functioning of our body?
Answer:
Water is essential for various functions of our body. Water helps in digestion of food. It also helps in elimination of undigested food. So, water is essential for proper functioning of our body.
Question 5.
‘Old people need less of proteins, carbohydrates and fats than young children.’ Justify this statement.
Answer:
Old people do not grow like children. Hence, old people need less protein than children. Similarly, old people do not do much physical activity. But children are always active. So, old people do not need as much carbohydrates and fats as children do.
Value Based Questions
Question 1.
Was Raman right in not eating anything at the party?
Answer:
Raman was wrong in not eating anything at the party.
Question 2.
Why did Raman’s parents feel bad at his behaviour?
Answer:
Raman’s parents did not like Raman’s behaviour. So, they felt bad.
Question 3.
Which is a better food – dal and paneer or pizza and burger?
Answer:
Dal and paneer are better food than pizza and burger.
Question 4.
What would you do if you were in Raman’s place? Discuss.
Answer:
I would have happily eaten the way Radhika ate. The food which was served at the party was healthy food. We should also learn to happily eat what is available at a party- We should not throw tantrums.
Something To Do
Question 1.
Write the names of the vitamins present in food items given below:
Answer:
Milk: vitamin A and D
Butter: vitamin A and D
Carrot: vitamin A
Eggs: vitamin A and D
Mango: vitamin A
Fish: vitamin D
Spinach: vitamin B and K
Orange: vitamin C
DAV Class 4 Science Chapter 7 Solutions – Food
I. Multiple Choice Questions:
1. Which of the following is a body building food?
(a) Rice
(b) Fruit
(c) Dal
(d) Sugar
Answer:
(c) Dal
2. Which of the following is an energy giving food?
(a) Potato
(b) Mutton
(c) Fish
(d) Carrot
Answer:
(a) Potato
3. Iodized salt contains which mineral?
(a) Calcium
(b) Iodine
(c) Phosphorus
(d) Iron
Answer:
(b) Iodine
4. Which mineral is necessary for formation of haemoglobin in blood?
(a) Calcium
(b) Iodine
(c) Iron
(d) Sodium
Answer:
(c) Iron
5. Butter is a rich source of which nutrient?
(a) Carbohydrate
(b) Fat
(c) Protein
(d) Roughage
Answer:
(b) Fat.
II. Fill in the blanks:
Question 1.
A ______ diet contains all the nutrients in correct amount.
Answer:
balanced
Question 2.
______ is necessary for growth and repair in the body.
Answer:
protein
Question 3.
Fat provides ______ energy than carbohydrate.
Answer:
more
Question 4.
Vitamin ______ is good for healthy gums and healing wounds.
Answer:
C
Question 5.
Calcium and phosphorus are needed for healthy ______ and ______
Answer:
bones, teeth.
III. Write True or False for the following:
1. Carbohydrate also keeps our body warm.
2. Protein is the energy giving food.
3. Fat is the energy giving food.
4. Vitamins help in growth and repair.
5. Minerals help in fighting diseases.
Answer:
1. Carbohydrate also keeps our body warm. (False)
2. Protein is the energy giving food. (False)
3. Fat is the energy giving food. (True)
4. Vitamins help in growth and repair. (False)
5. Minerals help in fighting diseases. (True)
IV. Match the following:
| Column A | Column B |
| 1. Calcium | (a) Nerve impulses |
| 2. Iron | (b) Thyroid gland |
| 3. Iodine | (c) Flaemoglobin |
| 4. Sodium | (d) Bones and teeth |
Answer:
| Column A | Column B | |
| 1. Calcium | d | (a) Nerve impulses |
| 2. Iron | c | (b) Thyroid gland |
| 3. Iodine | b | (c) Flaemoglobin |
| 4. Sodium | a | (d) Bones and teeth |
V. Answer the following Questions in one word:
Question 1.
Rice and wheat are rich in which nutrient?
Answer:
Carbohydrate
Question 2.
Pulses are rich in which nutrient?
Answer:
Protein
Question 3.
Which vitamin can be obtained by sitting in sunlight?
Answer:
Vitamin D
Question 4.
Vitamin K is required for which function?
Answer:
Clotting of blood
Question 5.
A person is suffering from bleeding gums. He is suffering from the deficiency of which vitamin?
Answer:
Vitamin C
VI. Answer the following Questions in brief:
Question 1.
What do you understand by nutrients?
Answer:
Nutrients are the substances present in our food. They provide us energy, help us grow, keep us healthy and disease free.
Question 2.
What do you understand by energy giving food?
Answer:
Carbohydrates and fats are energy giving foods. Our body needs energy to perform various functions. Fats not only provide energy but also keep us warm. Fat gives more energy than carbohydrate.
Question 3.
What do you understand by body building food?
Answer:
Proteins are body building food. They help in growth and repair. Milk, eggs, pulses, cheese, fish, nuts, etc. are rich sources of protein.
Question 4.
What do you understand by protective food?
Answer:
Vitamins and minerals are protective food. They protect our body form diseases and keep us healthy.
Question 5.
What happens if someone keeps on taking unbalanced diet?
Answer:
When someone keeps on taking unbalanced diet it affects his health. Over the years, a particular nutrient remains missing from his diet. This affects his growth and proper functioning of body. He can become either very thin or obese.
VII. Picture Based Question
Question 1.
Take cutouts of following pictures along dotted lines. Make a food pyramid from them. The food which should be taken in maximum quantity should come at the bottom of the pyramid. The food which should be taken in minimum quantity should come at the top of the pyramid. One picture should be used only once, so the pyramid should have six levels in all.
Answer:
Do it yourself
DAV Class 4 Science Chapter 7 Notes – Food
→ Nutrients: Nutrients are the substances present in our food. They provide us energy, help us grow, keep us healthy and disease free.
→ Types of Food:
- Energy Giving Foods: Carbohydrates and fats are energy giving foods. Our body needs energy to perform various functions. Fats not only provide energy but also keep us warm. Fat gives more energy than carbohydrate.
Sources of carbohydrates: rice, wheat, maize, sugar, potato, honey, sugarcane, etc. Sources of fats: butter, ghee, nuts and meat. - Body Building Foods: Proteins are body building food. They help in growth and repair. Milk, eggs, pulses, cheese, fish, nuts, etc. are rich sources of protein.
- Protective Foods: Vitamins and minerals are protective food. They protect our body form diseases and keep us healthy. Different types of vitamins are: A, B, C, D, E and K.
Some major vitamins, their sources and functions
| Vitamins | Sources | Functions |
| A | Spinach, yellow fruits like mango and papaya, carrot, milk, butter, eggs. | Necessary for good eye-sight and healthy skin. |
| B | Green leafy vegetables, soyabean, milk, beans, peas. | Necessary for healthy skin and proper functioning of nerves. |
| C | Orange, lemon, amla, tomato, green vegetables. | Necessary’ for proper functioning of blood vessels, for healthy gums and for healing of wounds. |
| D | Milk, eggs, butter, fish, sunlight, cod liver oil. | Necessary for healthy bones and teeth. |
| E | Vegetable oils like mustard oil, groundnut oil, etc. | Necessary for proper functioning and maintenance of muscles. |
| K | Green leafy vegetables like spinach, coriander leaves, etc. | Necessary for clotting of blood. |
Some major minerals, their sources and functions
| Minerals | Sources | Functions |
| Calcium | Milk, green leafy vegetables. | Required for healthy bones and teeth. |
| Phosphorus | Milk, egg, fish, green vegetables, pulses. | Required for healthy bones and teeth. |
| Iron | Pulses, nuts, spinach, beans, apple. | Required for formation of haemoglobin in blood and to protect us from infections. |
| Iodine | Iodised salt, sea foods like prawn, fish, etc. | Required for normal functioning of thyroid gland and normal growth of the body. |
| Sodium and potassium | Salt, pulses, fruits and vegetables. | Required for proper conduction of nerve impulses. |
→ Other Essentials
- Roughage: The fibre present in the food makes the roughage. We get fibre from fruits, vegetables, pulses and whole grains. Roughage provides no nutrition. But it helps the body to get rid of undigested food.
- Water: Water is essential for various functions of the body. Water helps in digestion of food. It also helps in eliminating waste from the body.
- Balanced Diet: A diet which includes all the nutrients in correct amount is called balanced diet. We should always take a balanced diet.