RBSE Solutions for Class 7 Science Chapter 1 Components of Food are part of RBSE Solutions for Class 7 Science. Here we have given Rajasthan Board RBSE Class 7 Science Chapter 1 Components of Food.
| Board | RBSE |
| Textbook | SIERT, Rajasthan |
| Class | Class 7 |
| Subject | Science |
| Chapter | Chapter 1 |
| Chapter Name | Components of Food |
| Number of Questions Solved | 53 |
| Category | RBSE Solutions |
Rajasthan Board RBSE Class 7 Science Chapter 1 Components of Food
Textbook Exercise
Choose the most appropriate option
What Are The Functions Of Food Class 7 Question 1.
Which element is found in protein?
(a) Calcium (Ca)
(b) Magnesium (Mg)
(c) Boron (B)
(d) Nitrogen (N)
Answer:
(d) Nitrogen (N)
Food Components 7th Class Question 2.
Which vitamin’s deficiency causes Night blindness disease?
(a) Vitamin B
(b) Vitamin C
(c) Vitamin A
(d) Vitamin K
Answer:
(c) Vitamin A
Fill in the blanks:
1. Deficiency of vitamin C in diet causes ……….. disease.
2. Deficiency of …………… causes beri-beri.
3. Fat is ………………….. in water.
4. Water acts as a ……………………… in the body.
5. Fibrous substance called …………………. is found in food substances.
Answers:
1. Scurvy
2. Vitamin B
3. Insoluble
4. Solvent
5. Roughage
Short Answer Questions:
What Are The Components Of Food Class 7 Question 1.
Define balanced diet.
Answer:
A diet that contains the proper proportions of carbohydrates, fats, proteins, vitamins, minerals, and water necessary to maintain good health.
Components Of Food Class 7 Question 2.
Write two functions of proteins.
Answer:
- Protein is necessary for growth, development and formation of our body.
- It is necessary for division and repair of cells.
7th Class Science 1st Lesson Food Components Questions And Answers Question 3.
Write two vitamin’s name and disease caused by deficiency of them.
Answer:
- Vitamin A: Deficiency of vitamin A causes night blindness.
- Vitamin C: Deficiency of vitamin C causes Scurvy.
Class 7 Science Chapter 1 Food Components Question 4.
What is roughage, give two examples.
Answer:
Fibrous indigestible material in vegetable foodstuffs which aids the passage of food and waste products through the gut. Fresh fruits and wholemeal bread are important sources of roughage in the diet.
Long Answer Type Questions:
7th Class Science Food Components Questions And Answers Question 1.
Write down names of major sources of energy and explain any two sources.
Answer:
Components of food: The main components of food are:
- Carbohydrates
- Proteins
- Fats
- Vitamins
- Mineral salts
- water and
- Fibers
1. Carbohydrates: Carbohydrates are made of carbon, hydrogen and oxygen. Glucose is a carbohydrate. Additional carbohydrate is found in the form of glycogen. Carbohydrates are source of energy for our body. The main carbohydrates found in our food are starch and sugars. Mainly carbohydrate in our body is obtained from wheat and rice. Wheat is taken in the form of Chapati, bread or noodles etc. Rice can be consumed as such or in the form of dosa oridli.
Sources:
Some of the sources of carbohydrates are wheat, Rice, Maize, Potatoes, Sugar, Jaggery, Banana, Mango, melon etc. Carbohydrates in our food obtained mainly from plants.
Functions:
- They provide energy to the body
- They maintain body temperature
- They maintain activities of every organ, tissue and cell of the body
2. Proteins: Proteins are composed of amino acids molecules which are made of carbon, hydrogen, oxygen and nitrogen. These are necessary for biochemical reactions taking place in cells and are building blocks of our body. 516 mmm mili ‘ mmm mmm mmm m Sources: The foods which are rich in protein are Milk, Cheese, pulses, Peas, Soybean, Groundnut, Fish, meat, eggs, chicken. Foods such as pulses, beans, peas, soybean, etc. are plant products. Foods such as eggs, meat, milk, cheese, meat etc. are animal products.
Functions:
- Proteins are necessary for growth and development of our body.
- These are responsible for cell division and repair of cells.
Food Components 7th Class Questions And Answers Question 2.
Why is balanced diet necessary for our body?
Answer:
Balanced diet: The food which we eat during the whole day is called diet. A diet which contains all the essential nutrients such as carbohydrates, fats, proteins, vitamins, minerals in adequate amount is known as balanced diet. It also contains adequate amount of water and roughage. No single food contains all the nutrients. Some are rich in one nutrient and some in others. Balanced diet is necessary for normal growth and development of our body.It protects us from many diseases. It also maintains different biochemical reaction of the body. A balanced diet is not the same for all age groups or occupations.
For example: A growing child needs more proteins in his diet than a grown up man. This extra protein is needed to make the body tissues of the fast growing child. A person doing hard physical work needs more carbohydrates in his diet than a man doing normal work.
Food Components 7th Class Notes Question 3.
Why are minerals necessary for our diet?
Answer:
For proper growth and development of the body, adequate amount of mineral salts should be included in our diet. The number of mineral salts found in our body are approximately 24, but calcium, magnesium, Phosphorous, iron, copper and Potassium are most important. Mineral salts are very important for our body. These perform following functions for our body:
- Takes part in the formation of body.
- Takes part in synthesis of various hormones and bio catalyst.
- Also helps in control and coordination of body.
7th Class Science 1st Lesson Food Components Question 4.
Prepare a chart of weekly menu of Mid Day Meal (M.D.M) provided by your school.
Answer:
Weekly chart for Mid Day Meal.
| S.No. | Day | Food |
| 1 | Monday | Roti, Green vegetable, dal, Sweets (Besan ke Ladoo) |
| 2 | Tuesday | Curry/Kadhi,rice,Roti, vegetable, Barfi |
| 3 | Wednesday | Rajma (Kidney Beans), Rice, Roti, Mix veg, raita |
| 4 | Thursday | Kheer, Puri, vegetable, Salad |
| 5 | Friday | Pulav, Chole, Roti, Green vegetable, Ladoo |
| 6 | Saturday | Salty rice, veg pulao, Mixed pulses, Roti, salad |
Practical Work:
7th Class Science Food Components Question 1.
Prepare a chart of food components, sources, impacts, diseases caused by deficiency and excess of it and demonstrate in a class room.
Answer:
Nutrient, their sources, effects deficiency and pleaty (excursiveness) diseases caused by them:
| S.No. | Nutrients of food | Sources | Functions | Deficiency/Excess in take |
| 1 | Carbohydrates | Cereals, Potato, banana, Jaggery, Sugar | Energy production | weakness, obesity increases |
| 2 | Protein | Pulses, Eggs, Meat, Mushroom, Soyabean, | body formation | deficiency causes kwashiorkor excess causes shapelessness of body |
| 3 | Fats | Ghee,oil,Meat | Energy production and body formation | Deficiency causes weakness and excess causes obesity |
| 4
|
Vitamin A | Yellow Suits, carrot | healthy eyes | deficiency causes night blindness |
| Vitamin B | Green leafy vegetables, Beans | strong muscles | deficiency causes beri-beri | |
| Vitamin C | Lemon, tomato, amla | healthy gums | Deficiency causes scurvy | |
| Vitamin D | Sunlight | healthy bones | deficiency causes rickets | |
| Vitamin E | Cucumber, fruits, vegetables | Fertility | deficiency can cause infertility | |
| Vitamin K | Spiwach/palak, fenugreek, milk | Blood clotting | deficiency did not cause blood to clot | |
| 5
|
Mineral salts, Calcium and Phosphorous, | Milk, eggs | development of bones and teeth | weakness of teeth and bones, excess causes shapelessness of bones |
| Iron | Spiwach/Palak, brinjal, fenugreek | preparation of haemoglobin | deficiency causes Anemia | |
| Iodine | iodised salt or iodised water | thyroid gland | deficiency causes Goitre |
Class 7 Science Food Components Telangana State Board Solutions Question 2.
Do a role play on a disease caused by deficiency of food components with the help of teacher. “Come, keep the disease away” prepare an article on it and do act.
Answer:
Students will do themselves.
Intext Questions
Food Components 7th Class Pdf Question 1.
What are the components of food? (Page 2)
Answer:
Carbohydrate, protein, fat, vitamin, minerals (salts), water and roughage.
7 Class Science Food Components Question 2.
Do all type of food component works a like? (Page 2)
Answer:
No. all the components have different functions.
What Are The Essential Components Of Food Class 7Question 3.
When we play, climb up the height, run or do any physical exercise, we get tired. What is the reason for this? (Page 3)
Answer:
The energy stored in our body is used for doing these activities. Therefore, we feel tired.
Food Components Lesson For 7th Class Question 4.
How much beneficial these carbohydrate are for our body? (Page 4)
Answer:
Carbohydrates provide energy to our body for performing different functions and maintain body temperature.
Food And Its Constituents Class 7 Notes Question 5.
Protein is advantageous in which manner ? (page 4)
Answer:
These are necessary for growth, development and repair of our body.
7th Class Food Components Questions And Answers Question 6.
Where fat comes from? (page 5)
Answer:
Fats are obtained from plants and animals. For example oil from mustard and coconut plant and ghee, meat etc. are obtained from animals.
Food Components 7th Class Question And Answers Question 7.
How much beneficial these fats are for our body? (Page 6)
Answer:
Fats provide energy to our body and make our body strong.
Food Items And Components Table 7th Class Question 8.
How vitamins are useful for growth and development of our body? (page 6)
Answer:
Vitamins are helpful in normal growth and development of our body. These also increase immunity of our body.
Components Of Food Class 7 Cbse Question 9.
Where do we get minerals? (page 7)
Answer:
Mineral salts are mainly obtained from milk, curd, green leafy vegetables, fresh fruits etc.
Activity
Activity 2: (Page 5)
7th Class Food Components Lesson Question 1.
What changes are visible on observation?
Observation: The colour of mixture turns violet.
Conclusion: Protein reacts with copper sulphate and caustic soda and turns to purple colour solution. This activity shows that gram flour contains protein.
Activity 3: (Page 6)
What Are The Components Of Food Class 7 RBSE Question 1.
What are visible ?
Observation: On the first paper oil spread more, and the paper has to be sleak as well became translucent when put across the sun. On the second paper water dried up and there are no change. This is a general method of test of fastas.
Conclusion : We concluded on the basis that fat is smooth and oily.
Other Important Questions
Multiple Choice Questions:
7th Class 1st Lesson Food Components Questions And Answers Question 1.
Starch gives following colour with iodine solution:
(a) red colour
(b) Blue colour
(c) Yellow colour
(d) Green colour
Answer
(b) Blue colour
7th Class Food Components Question 2.
In which of the following substance carbohydrates, proteins, fats and calcium all are found?
(a) Germinated wheat
(b) Green vegetables
(c) Pulses
(d)Mill
Answer
(d)Mill
Food Components 7th Class State Syllabus Question 3.
Fats are
(a) Esters of glycerol
(b) Polymers of glucose
(c) Polymers of amino acids
(d) Salts of fatty acids
Answer
(a) Esters of glycerol
Food Components 7th Class Worksheets Question 4.
The energy obtained by one gram of carbohydrate is:
(a) 2 calorie
(b) 4 calorie
(c) 6 calorie
(d) 8 calorie
Answer
(b) 4 calorie
Food Components 7th Class Bits Question 5.
The disease caused by deficiency of protein is:
(a) kwashiorkor
(b) Scurvy
(c) Night blindness
(d) Rickets
Answer:
(a) kwashiorkor
Fill in the blanks:
1. The main source of energy and power to living organisms is …………. .
2. Protein gives ……………. to the body.
3. …………….. is stored in the body in the form of fats.
4. ……………. are obtained mainly from milk, curd, green leafy vegetables, fig, fresh fruits etc.
5. ………….. percent of our body is water.
Answers:
1. Carbohydrates
2. Nitrogen
3. Energy
4. Vitamins and Mineral salts 5.70
Very Short Answer Type Questions
Components Of Food Class 7 Question 1.
What do you mean by food?
Answer:
Food is any substance consumed to provide nutritional support and energy for an organism.
What Components Are Most Common In Your List Question 2.
Write the name of two components of food which protects us.
Answer:
- Vitamins and
- Mineral salts.
Components Of Food Class 6 Worksheet With Answers Question 3.
What will we drink immediately when we feel tired to get energy?
Answer:
Aqueous solution of glucose.
7th Class Science 1st Lesson Food Components Pdf Question 4.
What will happen if carbohydrates are not included in our diet?
Answer:
If carbohydrates are not included in our diet, our work efficiency will decrease.
Class 7 Food Items And Components Table Question 5.
Why children and adults need more protein?
Answer:
In childhood and young age, mental and physical growth takes place at a rapid rate. For this, protein is required.
What Are The Functions Of Food Class 6 Question 6.
What is called energy center of our body?
Answer:
Fats are called as energy centers.
Functions Of Food Class 6 Question 7.
Write two animal sources of fats?
Answer:
- Butter
- Meat
7th Class 1st Lesson Food Components Question 8.
A camel can live without food for many days.How?
Answer:
The hump of camel has fat stored in it. Therefore, a camel can live without food for many days.
Class 7 Science Food Components Telangana State Board Worksheets Question 9.
What happens by eating junk food and why?
Answer:
Obesity increases by eating junk food because junk food has large amount of fat.
Food Function Question 10.
How many vitamins are discovered till now?
Answer:
15 vitamins are discovered.
Short Answer Type Questions:
Class 7 Science Food Components Telangana State Board Previous Year Question Papers Question 1.
How is food important for us?
Answer:
Food is important for us because:
- Food gives us energy.
- Food is necessary for growth and development of body.
- It protects us from diseases.
- Nutritious food provides mental growth in addition to health.
- Helps in formation of body.
Components Of Food Class 7 Notes Question 2.
Classify sources of carbohydrates with examples.
Answer:
There are two main sources of carbohydrates:
- Starch containing sources: Examples, Roti, rice, potato, wheat, banana etc.
- Sugar containing sources: jaggery, sugar, dates etc.
Components Of Food Class 7 Question 3.
Write the functions of carbohydrates.
Answer:
Functions of carbohydrates:
- They provide energy to the body
- They maintain body temperature
What Are The Component Of Food Question 4.
What is the importance of protein for our body?
Answer:
The importance of protein for our body is:
- Proteins are necessary for growth and development of our body.
- These are responsible for cell division and repair of cells.
- Protein acts as enzymes in most of the biochemical reactions.
- Provides energy to the body in the absence of fats and carbohydrates.
- They give mental peace.
Why Are Vitamins Necessary In The Diet For Class 7 RBSE Question 5.
What are Vitamins? Write their functions.
Answer:
Any of a group of organic compounds which are essential for normal growth and nutrition and are required in small quantities in the diet are called vitamins.
Functions of Vitamins:
- For normal growth of body
- For proper functioning of body
- To increase immunity of body
- to maintain appetite
- to regulate digestion process
Classes Of Food With Pictures Question 6.
What is the importance of water for our body?
Answer:
Water is an important component for our body. About 70% of our body is water. Water acts as solvent in our body and maintain temperature of the body thereby protects us from many diseases. Water removes many harmful substance from our body. The percentage of water in our liver is 69% and in muscles 75%.
This Is Also A Component Of Food Question 7.
Write the functions of fibers.
Answer:
Functions of fibers:
- Fibers help in digestion.
- Due to fibers, food particles do not stick to the intestine.
- Roughage absorbs poisonous substances and water is produced during digestion.
- Roughage absorbs glucose in the body which maintains balance of sugar in the body. This decrease the risk of diabetes.
Food Components Meaning In Telugu Question 8.
Prepare a chart of balanced diet for 10-18 years old boy or girl.
Answer:
Table of balanced diet:
| S.No. | Components of food | Amount |
| 1 | Carbohydrates | 130-150g |
| 2 | Proteins | 78 g |
| 3 | fats | 22 g |
| 4 | Vitamin | As per requirement |
| 5 | Mineral salts | 660 mm gram |
| 6 | water | 2-3 L or as required |
| 7 | Fibers | As per requirement |
Long Answer Type Questions:
I Am A Component Of Food That Makes Paper Translucent Question 1.
Classify the components of food on the basis of their function.
Answer:
We can classify components of food on the basis of their function:
(A) Nutrients which give energy and promote growth and development of body:
(i) Carbohydrates
(ii) Fats
(iii) Protein
(B) Nutrients which help in formation of body,
(i) Protein
(ii) Mineral salts
(iii) water
(C) Nutrients which provide protection
(i) Vitamin
(ii) Mineral salts
(iii) Protein, water.
Question 2.
What are fats? Write the sources and functions of fats.
Answer:
Fats are those organic compounds found in cells which are insoluble in water. These are esters of glycerol. Fats are formed of elements like carbon, hydrogen and oxygen. Fats work as reserved energy sources in our body. Our body gets maximum energy from fats. In our body, solid fats is known as lipid and liquid fat is known as oil. It is slippery and is a source of energy for the body.
Types of fats and sources:
- Fats obtained from plants: Mustard, ground nut, sesame seeds, coconut, cashew nut, walnut.
- Fats obtained from animals: milk, eggs, meat, butter etc.
Functions of fats:
- Fats provide energy to the body.
- Fats accumulate beneath the body and gives strength. Too much consumption of fats makes body clumsy.
- Fats protects the internal organs of the body from outer shocks and gives strength to the muscles.
Question 3.
Write the name of major vitamins and their sources.
Answer:
Major vitamins arid their sources:
| S.No. | Vitamin | Sources |
| 1 | Vitamin A | Milk, green leafy vegetables, carrot, papaya etc. |
| 2 | Vitamin B | Milk, pulses, eggs, soyabean, fruits |
| 3 | Vitamin C | Lemon, oranges, Amla, tomato, guava |
| 4 | Vitamin D | Milk, fish, eggs, butter, sun rays |
| 5 | Vitamin E | Milk, green vegetables, butter, wheat bran. |
| 6 | Vitamin E | Green leafy vegetables, cumin seeds, soya bean, |
Question 4.
Fiber rich foods are nutritious. How can these be used?
Answer:
Fiber rich food can be included in diet as:
- Include fiber rich food like maize, kidney beans, pulses etc.
- Fruits like apple, pear, guava etc, should be eaten with peels because its fiber content is quite high.
- Radish, cabbage, peas, cucumber etc., have high quantity of fibers. Therefore, these should be included in our diet.
- Salad, dalia, dry Suits, ground nuts are also good sources of fibers.
- Use flour instead of fine flour (maida).
- Consume brown rice or oats.
Question 5.
Write the names of different components of food and disease caused due to deficiency of nutrients with then symptoms.
Answer:
Following table shows different components of food and disease caused due to deficiency of nutrients with their symptoms:
| S.No. | Nutrients of food | Disease | Characteristics/symptoms |
| 1 | Carbohydrates | Weakness | obesity increases |
| 2 | Protein | Kwashiorkor | excess causes shapelessness of body |
| 3 | Fats | Weakness | and excess causes obesity |
| 4 | Vitamin A | night blindness | weakness of eyes |
| Vitamin B | Beri-Beri | weakness | |
| Vitamin C | Scurvy | disease of gums and teeth | |
| Vitamin D | Rickets | weakness of bone | |
| Vitamin E | Infertility | weak reproduction power | |
| Vitamin K | Blood Clotting | excess flow of blood | |
| 5 | Mineral salts, | Development of | weakness of teeth and bones, excess |
| Calcium and | bones and teeth | causes shapelessness of bones | |
| Phosphorous, | |||
| Iron | Anaemia | deficiency causes weakness | |
| Iodine | Goitre | increase of thyroid gland |
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