AP Board 7th Class Social Solutions 2nd Lesson Forests

SCERT AP 7th Class Social Study Material Pdf 2nd Lesson Forests Textbook Questions and Answers.

AP State Syllabus 7th Class Social 2nd Lesson Questions and Answers Forests

7th Class Social 2nd Lesson Forests Textbook Questions and Answers

Observe the given picture.
AP Board 7th Class Social Solutions 2nd Lesson Forests 1

Answer the following questions.

Question 1.
Look at the above figure and say what do you observe in the figure?
Answer:
Forest, Birds and Wild animals habitation.

Question 2.
What are the components you can see in the forest ? Complete the given diagram.
Answer:
AP Board 7th Class Social Solutions 2nd Lesson Forests 2

Question 3.
Express your views about the forest in your own words.
Answer:
In my words, a forest is a piece of land with many trees. Many animals need forests to live and survive.

Forests are very important and grow in many places around the world. They are an ecosystem which includes many plants and animals.

We depend on forests for our survival.

Improve Your Learning

I. Answer the following questions.

1. A) Mention the types of forests in India.
Answer:
For -administrative convenience, the Government of India divided forests into three types. They are :

  1. Reserved forests
  2. Protected forests
  3. Unclassified forests.

B) Into how many types forests are classified?
Answer:
Forests are divided into five types based on climate, rainfall and types of soils. They are :

  1. Evergreen forests
  2. Deciduous forests
  3. Thorny forests
  4. Mangrove forests
  5. Montane forests

AP Board 7th Class Social Solutions 2nd Lesson Forests

Question 2.
Describe briefly about the Evergreen forests.
Answer:
Evergreen Forests :

  1. Evergreen forests are grown in the areas with high rainfall more than 200 cm.
  2. Trees in this area are very tall and they contain broad leaves.
  3. The trees in these forests remain green throughout the year. _
  4. These forests are located in Himalayan region, North-eastern states and Western ghats.
  5. Mahogany, Ebony, Rosewood trees etc. are found.
  6. Different types of snakes, Lion-tailed macaque and a variety of insects found here.

Question 3.
Describe the features of deciduous forests. Explain about flora and fauna of these forests in India.
Answer:

  1. The deciduous forest are grown in areas with rainfall between 70 cm and 200 cm.
  2. These forests are located in Peninsular plateau.
  3. The trees shed their leaves during very dry months to minimise transpiration.

Flora of this region :
Teak, Sal, Bamboo, Rosewood, Sandalwood, Neem, Shisham, Khair, Kusum, Arjun and Mulberry trees are found.

Fauna of this region :
The most common animals are found in this region like, Deers, Hares, Elephants, Tigers, Leopards, Peacocks, several species of Birds, etc.

Question 4.
Explain in detail about the thorn forests in India?
Answer:

  1. The thorn forests are found in regions with less than 70 cm of rainfall.
  2. Due to the arid climate most of the trees in these forests are sharp, thorny and bushy.
  3. This type of vegetation is found in the north-western parts of the country.
  4. Trees are scattered and have long roots penetrating deep into the soil in order to get moisture.
  5. The stems are succulent to conserve water.
  6. These forests are found in Madhya Pradesh, Uttar Pradesh, Rajasthan and Haryana.

Question 5.
Prepare some slogans on “conservation of forests”.
Answer:

  1. Save forests – Save the climate and wild life.
  2. Plant a tree – Keeps the flood away.
  3. Don’t destroy the greenery and don’t spoil the scenery. Save mother earth.
  4. Trees are Green Gold.
  5. Save trees now – They will save you in future.
  6. Plant a tree – Predict the mother earth.

AP Board 7th Class Social Solutions 2nd Lesson Forests

Question 6.
“Forests are essential for us, but yve destroy them.” Respond on this.
Answer:
The uses of forests.

  1. Forests play a major role in our life.
  2. Forests prevent soil erosion and floods.
  3. Trees help to regulate the climate of a place.
  4. We get more products which are needed to us from forests.

Even though the forests are useful for us, but we destroy them due to following relfeons.

  1. The ever-growing human consumption and population is the biggest cause of forest destruction.
  2. Along with population increase we need resources, products and services, so we destroy the forest.
  3. For the development of our nation for mining, for infrastructure projects, for agriculture purpose there is no other alternative so we destroy the forests.

Conclusion :
Governments will invent alternative resources for the development of our nation without destroying the forests.

Question 7.
List out the resources of the forests used by you in your daily life.
Answer:
The following resources are used by ourselves in our daily life from the forests.

  1. Notebooks → Wood pulp is used
  2. Furniture → Wood is used
  3. Medicines → Herbs are used
  4. Food & Fodder → Roots, tubers, bean sprouts, etc.
  5. Beedi leaves → Making beedis
  6. Bamboo is used for making fences
  7. Essential oils → Eucalyptus tree, camphor
  8. Fruits → Coconut, pear
  9. Cane → Walking sticks, etc.

Question 8.
Read about policies of forests and Fill in the following table.

Year Name of the policy Objectives
1894
1950
1952
1980
1988

Answer:

Year Name of the policy Objectives
1894 The Forest Law Meeting needs of local people and after meet­ing local needs maximum revenue collection.
1950 Forest Festival Vana Mahotsav – Create awareness on about saving forests, and bad effects of deforestation.
1952 National Forest Policy Should maintain 33% of forest cover.
1980 Forest Conservation Act 1) To protect the forest, its flora, fauna and other diverse ecological component.

2) To protect the integrity, territory, and individuality of the forests.,

1988 National Forest Policy Taking steps to create massive people’s move­ment with involvement of women to achieve the objectives and minimise pressure on exist­ing forest.

II. Choose the correct answer.

1. Which forests are green throughout the year?
a) Deciduous forests
b) Evergreen forests
c) Tidal forests
d) Mangrove forests
Answer:
b) Evergreen forests

2. Which of the following is not the slogan of conservation of forests?
a) Save the trees save the earth.
b) Save nature save future.
c) Greenery for better environment.
d) Good food good life.
Answer:
d) Good food good life.

3. Which of the following one is not a forest product?
a) Timber
b) Honey
c) Plums
d) Bread
Answer:
d) Bread

4. In which year was the National Conservation Policy enacted by the Central government?
a) 1984
b) 1950
c) 1952
d) 1980
Answer:
d) 1980

5. Which of the following forests have a variety of snakes and insects?
a) Evergreen forests
b) Deciduous forests
c) Mangrove forests
d) Thorny forests
Answer:
a) Evergreen forests

III. Match the following.

1.

Group-A Group-B
1. Evergreen forests A) Snow Leopard.
2. Deciduous forests B) Variety of fishes.
3. Montane forests C) Lion tailed macaque.
4. Mangrove forests D) Different kinds of deers.

Answer:

Group-A Group-B
1. Evergreen forests C) Lion tailed macaque.
2. Deciduous forests D) Different kinds of deers.
3. Montane forests A) Snow Leopard.
4. Mangrove forests B) Variety of fishes.

2.

Group-A Group-B
1. High rainfall A) Mangrove forest.
2. Little rainfall B) Montane forests.
3. Coastal line C) Evergreen forests.
4. Mountain region D) Thorny forests

Answer:

Group-A Group-B
1. High rainfall C) Evergreen forests.
2. Little rainfall D) Thorny forests
3. Coastal line A) Mangrove forest.
4. Mountain region B) Montane forests.

Puzzle

Solve the puzzle with the words related to given hints.
AP Board 7th Class Social Solutions 2nd Lesson Forests 3
Cross:
1. Largest hills in Andhra Pradesh (9).
2. Flora in evergreen forests (8).
3. These are known as Selvas (9).
4. Product of forest (4).
5. Raw material for Paper (6).

Down :
1. Hills in Tamilnadu (7).
2. Product of forest (6).
3. Forest in coastal region (8).
4. Product of forest (4).
5. Flora in deciduous forest (4).
Answer:
AP Board 7th Class Social Solutions 2nd Lesson Forests 4

7th Class Social 2nd Lesson Forests InText Questions and Answers

7th Class Social Textbook Page No. 20

Question 1.
Locate a few important countries in various climatic regions in the world map.
Answer:
AP Board 7th Class Social Solutions 2nd Lesson Forests 5

Question 2.
Prepare a table with various climatic regions and important countries in those regions.
Answer:

Climatic regions Countries
Equatorial / Tropical
Climatic Region
South America – Brazil
Asia – Indonesia
Africa – Kenya, etc.
The Savanna India-China
Australia                                                         ‘
Desert region Sahara – Egypt, Libya
Kalahari – Namibia
Australian Desert – Australia
Thar desert – India
Mediterranean Climate Europe – Spain, Italy, Turkey, Israel, Greece, etc.
Steppe Climate Ukraine, China, Uzbekistan, etc.
Taiga Region Alaska, Canada, Scandinavia, etc.
Tundra Region Russia, Greenland, Iceland – Sub – Antarctic islands

7th Class Social Textbook Page No. 21

Question 3.
Locate the Ever-green forests in an outline map of India.
Answer:

7th Class Social Textbook Page No. 22

Question 4.
Locate the areas of Deciduous forests in an outline map of India.
Answer:

AP Board 7th Class Social Solutions 2nd Lesson Forests

Question 5.
Locate the areas of Thorny and shrub forests in an outline map of India.
Answer:

7th Class Social Textbook Page No. 23

Question 6.
Locate the areas of Montane forests in an outline map of India.
Answer:

Question 7.
Fill up the following table.
AP Board 7th Class Social Solutions 2nd Lesson Forests 6
Answer:
AP Board 7th Class Social Solutions 2nd Lesson Forests 7

7th Class Social Textbook Page No. 25

AP Board 7th Class Social Solutions 2nd Lesson Forests 9
Question 8.
Observe the above Andhra Pradesh map. Which districts have more forest cover and which districts have less forest cover.
Answer:
YSR Kadapada, East Godavari, Visakhapatnam districts have more forest cover and Krishna and Anantapur districts have less forest cover.

AP Board 7th Class Social Solutions 2nd Lesson Forests

Question 9.
Witch type of forests do you find in your district?
Answer:
(Example : I am living in Krishna district. Mangrove forests are in Krishna district.)

7th Class Social Textbook Page No. 27

Question 10.
Fill up the following table.

Types of forest Extent Flora
Moist deciduous forests
Dry deciduous forests
Tidal forests

Answer:

Types of forest Extent Flora
Moist deciduous forests Srikakulam, Visakhapatnam and East Godavari Vegi, Egisa, Bamboo, Maddi, Bandaru, Jittegi and Sal.
Dry deciduous forests YSR Kadapa, Kurnooi, Ananthapur, and Chittoor. Maddi, Teak, Biliu, Velaga, Egisa, Neem, Buruga, Moduga and Red sandal.
Tidal forests Korangi region of East Godavari Uppu ponna, Boddu ponna, Urada, Mada, Tellamad-a, Patri Teega and Balabandi Teega.

7th Class Social Textbook Page No. 29

Question 11.
Prepare some slogans on social forestry.
Answer:
Slogans :

  1. A tree that stay, keep flood away
  2. Don’t cut a tree don’t cut a life.
  3. Don’t cut trees if you want cool air. ‘
  4. No Trees, No Mankind.
  5. Plant a tree today; make the life of the earth much longer.

Question 12.
Plant a tree on your birthday and take care of it.
Answer:

Question 13.
Gift a plant on important occasions to your friends and relatives.
Answer:

7th Class Social Textbook Page No. 30

Question 14.
Make a poster on tribal culture and tribal products.
Answer:
AP Board 7th Class Social Solutions 2nd Lesson Forests 8

Question 15.
Celebrate Vana Mahostav in your school/locality and plant a few plants and notice their growth.
Answer:

Think & Respond

7th Class Social Textbook Page No. 20

Question 1.
Compare the climate of the various climatic regions.
Answer:

Climatic regions Comparision of climatic condition
Tropical climatic region High temperature and heavy precipitation
The Savanna The climate is usually warm and temperature ranges from 20° to 30°C. Annual rainfall – 25 to 75 cm per year.
Desert Region Hot summers and cold winters, high diurnal range of temperatures.
Mediterranean Climate Pleasant climate with dry summer, and moderate to high rainfall in winter.
Steppe climate Extremes of heat & cold low amount of rajnfall.
Taiga climate Winters are extremely cold and long whereas summers are moderately hot and short.
Tundra climate The climate is cold and windy and rainfall is scanty.

If we compare the different regions through above table, equatorial region has high temperature & high rainfall compare with Taiga and Tundra regions. Desert regions have high temperature. Compare with mediterranean climate. Steppes have low amount of rainfall.

AP Board 7th Class Social Solutions 2nd Lesson Forests

Question 2.
What is the impact of climate on natural vegetation in climatic regions ?
Answer:

  1. The amount of temperature, rainfall, moist in air and soil determine the type of vegetation in forest.
  2. Ex : Evergreen forests in high temperature and rainfall regions – Bushy plants in arid regions.

Question 3.
Name the plants in forest which are having medicinal values.
Answer:
The commonly used plants in India are :

1) Sarpagandha :
Used to treat blood pressure, it is found only in India.

2) Jamun :
The powder of the seed is used for controlling diabetes.

3) Arjun
: The fresh juice of leaves is cure for ear ache.

4) Babool :
Leaves are used as a cure for eye sores.

5) Neem :
Has high antibiotic and antibacterial properties.

6) Tulasi plant :
Is used to cure cough and cold.

7) Kachnar :
Is used to cure asthma and ulcers.

7th Class Social Textbook Page No. 21

Question 4.
Why is a variety of flora and fauna found in evergreen forests ?
Answer:

  1. Evergreen forests are located in tropical regions.
  2. They receive a lot of sunlight and rainfall.
  3. There is a lot of energy in these forests.
  4. This energy is stored in plant vegetation, which is eaten by animals.
  5. The thick, dense forests are abode of Herbivorous and Carnivorous animals. So, a variety of flora and fauna is found in evergreen forests.

7th Class Social Textbook Page No. 22

Question 5.
Trees in deciduous forests shed their leaves. When and why ?
Answer:
The trees in deciduous forests shed their leaves during very dry months to minimise transpiration.

Question 6.
Have you ever seen the beauty of deciduous forests ? Describe the beauty of the forest.
Answer:
Yes. I have seen the beauty of deciduous forests.

  1. Forests are the nature gift to human beings. The deciduous forests shed leaves during the months of February and March.
  2. This is to reduce the consumption of water that it releases through leaves in the form of transpiration
  3. At that time the trees in the forest look completely dry.
  4. But when it starts budding of new leaves in spring, the forest looks very shiny and fresh. Later all the trees turned into very beautiful scenic view with shiny leaves and blossoms.
  5. One should watch and admire the picturesque marvel of deciduous forests.

AP Board 7th Class Social Solutions 2nd Lesson Forests

Question 7.
Mangrove forests are natural protectors of sea coast. Discuss.
Answer:
Mangrove swamps protect coastal areas from erosion, storm surge and tsunamis.

Mangroves act as shock absorbers. They reduce high tides and waves and help prevent soil erosion.

The mangroves massive root systems are efficient at dissipating wave energy.

7th Class Social Textbook Page No. 24

AP Board 7th Class Social Solutions 2nd Lesson Forests 10
Question 8.
Observe the above map. Which state has more forest cover. Give reasons.
Answer:
Madhya Pradesh state in India has more forest area.

The following reasons are responsible for more forest area in Madhya Pradesh.

Madhya pradesh has two horizontal mountain ranges from East to West. Vindya and Satpur mountains. These two ranges make a buffer of heavy clouds coming from South.

Hence, it results in longer period of rains and creates many seasonal rivers and ponds, which help dense forests.

Question 9.
Which state has less forest cover. Give reasons.
Answer:

  1. Punjab has the lowest forest cover with respect to total geographical area in India at 6.79 percent. It is a small state. Most of the people depended on agriculture only. As most of the land is under the cultivation there is less forest cover.
  2. Gujarath and Rajasthan states have less forest cover due to adverse conditions in most of their area.

Question 10.
The Western side of the Western Ghats is covered with thick forest than the Eastern side. Find the reason.
Answer:
Western Ghats are layered with thick evergreen forests because they receive more rainfall as compared to the Eastern Ghats that are covered with deciduous forests.

The Western Ghats get their rainfall from the monsoon winds that blow from Arabian sea.

7th Class Social Textbook Page No. 26

Question 11.
What are the uses of Red Sandalwood and Sandalwood?
Answer:
Uses of Red Sandalwood.

  1. Red Sandalwood is a tree.
  2. The wood at the centre of the trunk is used as medicine.
  3. Red Sandalwood is used for treating digestive tract problems, fluid retention, coughs, and for blood purification.
  4. In manufacturing, red Sandalwood is used as a flavoring in alcoholic beverages.

Uses of Sandalwood :

  1. Sandalwood is used as a fragrance in incense, cosmetics, perfumes and soaps.
  2. It is also used as a flavour for foods and beverages.
  3. The wood has been valued in carving because of its dense character.
  4. It is also used for medicinal purpose for headache, stomachache and urinary and genital disorders.

7th Class Social Textbook Page No. 27

Question 12.
Why do tribal people reject to leave the forests?
Answer:

  1. The tribal people lived in forest area for generations.
  2. They cleared the forests and follow agriculture.
  3. They worshipped nature gods.
  4. They domesticated animals.
  5. Their entire life depends on forests. ,

So they reject to leave the forests.

7th Class Social Textbook Page No. 28

Question 13.
What is the role of forests in conservation of environment?
Answer:
Role of forests in conservation of environment : „

  1. Prevent soilerosion and help in maintaining fertility of soil.
  2. They provide shelter to wild animals and are areas that sustain biodiversity.
  3. They reduce atmospheric pollution.
  4. They increase humidity and frequency of rainfall.
  5. They check the increase of atmospheric temperature.

AP Board 7th Class Social Solutions 2nd Lesson Forests

Question 14.
Write a list of items made from forest products in your surroundings.
Answer:
The following items we are using in our daily life.
Foods : Honey, Fruits, Palm oil, Mushroom, etc.
Wood : Furniture, paper, decorative items, etc.’
Medicines : Natural Aspirin and Acne medication.
Other items : Chewing Gum, Sponges, Carnauba wax, Henna Dye, Rubber, etc.

7th Class Social Textbook PageNo.29

Question 15.
What are the reasons for deforestation?
Answer:

  1. Agriculture
  2. Urbanization
  3. Industrialization
  4. Forest fires
  5. Mining
  6. Construction of Dams and Reservoirs etc. are the reasons for deforestation.

Question 16.
What are the consequences of deforestation?
Answer:

  1. Flooding
  2. Loss of soil
  3. Loss of biodiversity
  4. Climatic change
  5. Health problems and
  6. Displacement of the indigenous people are the consequences of deforestation.
  7. Imbalance of ecosystem causing natural calamities.
  8. Loss of habitat of wild life.

Question 17.
Suggest a few measures for afforestation!
Answer:
Methods that can be used to enhance afforestation are :

  1. Increase the number of planting trees and protect them.
  2. Choose the barron lands, waste lands to plant trees under social forestry.
  3. Road side areas, industrial areas can be enriched with thick growth of trees.
  4. Encourage the plants that provide forest products to the needy so that they pay interest to conserve them.

Question 18.
Do you observe any plantation of trees in your surroundings? What are the uses of plantation?
Answer:
Yes. I observed.

Uses of plantation :

  1. The more trees are there, the cleaner the air will be.
  2. Trees and forests can provide natural filtration, resulting in cleaner wafer.
  3. Planting trees can help to slow down the process of heat trapping of carbondioxide in our atmosphere.
  4. Trees are essentially nature’s wind-breakers, providing protection and shade during hot weather and dazzling sunshine.

Explore

7th Class Social Textbook Page No. 20

Question 1.
Go through library books or internet to know more about climatic regions.
Answer:

AP Board 7th Class Social Solutions 2nd Lesson Forests

Question 2.
Know about Podu cultivation with the help of your teacher.
Answer:
Podu is a traditional system of cultivation used by tribes in India, whereby different areas of jungle forest are cleared by burning each year to provide land for crops.

Podu is a form of shifting agriculture using slash-and-burn methods. Traditionally used on the hill-slopes of Andhra Pradesh. It is also known as Jhum cultivation.

7th Class Social Textbook Page No. 29

Question 2.
Go throiigh library books or browse internet to know more information about the given forest acts.
Answer:
The objectives of Forests Acts :

  1. To consolidate all the previous laws regarding forests.
  2. To give the Government the power td create different classes of forests for their effective usage for the colonial purpose.
  3. To regulate movement and transit of forest produce, and duty leviable on timber and other forest produce.
  4. To define the procedure to be followed for declaring an area as Reserved Forest, Protected Forest or Village Forest.
  5. To define forest offences acts prohibited inside the Reserved Forest, and penalties leviable on the violation.
  6. To make conservation of forests and wildlife more accountable.

Project Work

Prepare a model of forest use with natural material. Ans. Student’s own activity.

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AP Board 7th Class Science Solutions 1st Lesson Food for Health

SCERT AP 7th Class Science Study Material Pdf 1st Lesson Food for Health Textbook Questions and Answers.

AP State Syllabus 7th Class Science 1st Lesson Questions and Answers Food for Health

7th Class Science 1st Lesson Food for Health Textbook Questions and Answers

Improve Your Learning

I. Fill in the blanks.

1. Cereals and millets are rich in ______ .
2. ______ are present in Pulses.
3. Take more ______ & ______ to prevent constipation.
4. ______ is caused by the deficiency of Vitamin D.
5. Deficiency of Vitamin C causes ______ disease.
Answer:
1. Carbohydrates
2. Proteins
3. Dietary fibre, water
4. Rickets
5. Scurvy

II. Choose the correct answer.

1. Ramana rubbed few sesame grains on a paper. The paper turns translucent at that
a) carbohydrates
b) proteins
c) fats
d) water
Answer:
c) fats

2. Anaemia is caused by the deficiency of
a) Zinc
b) Iron
c) Vitamin A
d) Calcium
Answer:
b) Iron

AP Board 7th Class Science Solutions 1st Lesson Food for Health

3. We lose vision due to deficiency of
a) Vitamin A
b) Vitamin B
c) Vitamin C
d) Vitamin D
Answer:
a) Vitamin A

III. Matching:

A) Night blindness 1. Carbohydrates
B) Energy giving food 2. Iron
C) Body building food 3. Vitamin A
D) Protecting food 4. Proteins
E) Anaemia 5. Minerals and Vitamins
6. Sodium

Answer:

A) Night blindness 3. Vitamin A
B) Energy giving food 1. Carbohydrates
C) Body building food 4. Proteins
D) Protecting food 5. Minerals and Vitamins
E) Anaemia 2. Iron

IV. Answer the following questions.

Question 1.
Name the components of food.
Answer:
Our diet consists of the following components.

  1. Carbohydrates
  2. Proteins
  3. Fats
  4. Minerals
  5. Vitamins
  6. Dietary fibres and
  7. Water.

Question 2.
Make a list of food items taken during lunch. Write the components in each food item.
Answer:

Food items Components
1. Boiled rice Carbohydrates
2. Vegetable curry Vitamins, minerals, fats
3. Egg Proteins
4. Chikki Carbohydrates, proteins, fats, vitamins and minerals

Question 3.
What is the role of water present in our diet?
Answer:

  1. Water is also a component of blood.
  2. But water does not contain any nutrients. So it cannot be considered as a nutritive component, water constitutes nearly 2/3 of our body weight.
  3. It regulates and maintains the temperature of our body.
  4. It helps in excretion of wastes from our body as urine and sweat.
  5. Water is essential for many metabolic activities.
  6. Water helps in easy movement of the food through the digestive track.
  7. It helps in digestion of food also.

Question 4.
What questions will you ask a nutritionist to know about deficiency diseases due to malnutrition?
Answer:

  1. What is malnutrition?
  2. What are deficiency disease?
  3. How does malnutrition lead to deficiency diseases?
  4. How can we identify deficiency diseases?
  5. How can we prevent deficiency diseases?
  6. How can be these diseases cased?

AP Board 7th Class Science Solutions 1st Lesson Food for Health

Question 5.
What will happen if we don’t u- ‘ de roughage in our food?
Answer

  1. Roughage help in free bowel movement in the digestive tract and prevent constipa¬tion.
  2. If we don’t include roughage in our food, it leads to constipation.

Question 6.
Mary read somewhere that congee (ganji) contains carbohydrates. Explain the test you suggested her to confirm it.
Answer:
I will suggest to conduct the iodine test to confirm the presence of carbohydrates (starch) in congee by following the templet given below.

Aim: To confirm the presence of starch in congee (ganji).

What you need : 1. Dilute iodine solution (dissolve few iodine crystals in water until it turns into pale brown), 2. Congee, 3. Plate/ test tube, 4. Dropper.

How to do : Take a few drops of congee on a plate/ in a test tube. Add two drops of iodine on the potato piece. Observe if there is any change in colour. If starch is present, it will turn into blue-black.

What you see : The congee turns into blue-black colour.

What you learn : Starch is present in congee.

Question 7.
How can you test the presence of proteins in the given food sample?
Answer:
Aim : To confirm the presence of proteins in the given food sample.

What yon need: (1) 2% Copper suiphate solution (dissolve 2g Copper sulphate in 100 m/water) (2) 10% Sodium hydroxide solution (dissolve lOg Sodium hydroxide in 100 ml water ), egg (3) Test tubes (4) Two Beakers (5) Dropper.

How to do: Make the given food sample into paste (if it is a solid). Take some food sample in a test tube. Add two drops of copper sulphate and ten drops of sodium hydroxide solution. Shake well and keep the test tube in a stand for few7 minutes. Ob-serve for any change in the colour of the material. If the colour of the materia! turns violet, it contains protein.

What you see : The food sample turns into violet colour.

What you learn : Proteins are present in food sample.

Question 8.
Draw a pyramid showing the required quantities of food needed for our body. (Use the picture of my plate for The day prepared by WIN as reference.)
Answer:

Question 9.
Appreciate the role of green leafy vegetables h maintaining our health.
Answer:

  1. Greers Seafv vegetables play key role in maintaining our health.
  2. They contain vitamins and minerals.
  3. Vitamins and minerals are called protective nutrients.
  4. They protect our body from diseases.
  5. They also help in proper growth and development of our body7
  6. Roughages are also present in green leafy vegetables.
  7. Thus they prevent constipation also.
  8. So we should appreciate the role of green leafy7 vegetables in maintaining our health by including them in plenty in our diet.

Question 10.
Wimt is balanced diet? What food materials wiH you include in your diet to make it a balanced one?
Answer:

  1. A diet that contains all the nutrients in required quantity is called balanced diet.
  2. I will include
    – adequate quantities of energy giving food such as rice / chapati/ bread
    – moderate quantities of body building food like milk, curd, dal/ meat/ fish
    – plenty of protective food such as vegetables, green leafy vegetables and fruits
    – a small quantity of oil, fat daily in my diet to make it a balanced one.

7th Class Science 1st Lesson Food for Health InText Questions and Answers

7th Class Science Textbook Page No.2

Question 1.
Name the foot? items that are served in a mid-day meal-
Answer:

Day Menu
Monday Rice, Egg curry. Chick pea (chikki)
Tuesday Pulihora, Tomato dal, Boiled egg
Wednesday Vegetable rice, Aloe kurma, Boiled egg. Chick pea
Thursday Kichdi, Tomate chutney, Boiled egg
Friday Rice, Asparagus, Boiled egg. Chick pea
Saturday Rice, Samfcar and Sweet Pongal

Question 2.
What is the objective of providing mid-day meal: to the school children?
Answer:

  1. To avoid classroom hunger
  2. To increase school enrolment
  3. To increase school attendance
  4. To address malnutrition
  5. To improve socialization among castes
  6. To empower wanes through employment.

AP Board 7th Class Science Solutions 1st Lesson Food for Health

7th Class Science Textbook Page No. 3

Question 3.
Is the menu same for ail days?
Answer:
The menu, is different with delicious food items like ehikkis, sweet pongal, vegetable rice, eggs etc.

Question 4.
Do you knew. ’why different food hems are hang-served is Mid-day meal? fe it only lot taste?
Answer:

  1. Every food item is made up of one or more ingredients.. Every ingredient has one or more eutrients/components.
  2. These nutrients give us energy, keep us healthy and helps in the growth and repan of our body,
  3. So, different food items are being served not only for taste, It is for good health also.

Question 5.
Do you toow about the nutrients present in, chikki? Is it same as the Nutrients present in egg? Discuss.
Answer:

  1. Nutrients present in chikki are 1) Carbohydrates 2) Proteins 3) Fibre 4) Calcium 5) iron 6) Magnesium 7) Vitamin B6 8) Potassium.
  2. Nutrients present in egg (boiled) are 1) Proteins 2) Iron 3) Vitamin-D 4) Vitamin – A 5) Vitamin B
  3. Nutrients are not same in chikki and egg.
  4. Both egg and chikki contain protein and iron.
  5. Carbohydrates are not present in the egg.
  6. Vitamin – D is not present in chikki. Fibre is not present in egg.

7th Class Science Textbook Page No. 4

Question 6.
Do you know, the role of the nutrients present in the diet?
Answer:
Each nutrient plays an important role in the growth and well being of our body.

Question 7.
Why do cricket players take the drinks during the break?
Answer:

  1. When we are tired, we need energy to become normal. .
  2. During the cricket match the players need continuous energy to play.
  3. The drink has glucose and it gives instant energy to the body.

Question 8.
Does all the food items contain carbohydrates? How can we confirm this?
Answer:

  1. No. All the food items do not contain carbohydrates.
  2. By doing iodine test, we can confirm it.

7th Class Science Textbook Page No. 5

Question 9.
Sravya was weak, so the doctor suggested her to take milk, egg and pulses everyday. Can you guess why he did suggest so? Which components do they contain?
Answer:

  1. Milk, egg and pulses contain rich proteins.
  2. Proteins are required for the formation of muscles and other body organs.
  3. To get healthy body doctor suggested to take the food with proteins.

7th Class Science Textbook Page No. 6

Question 10.
Are proteins present in all food items? How can we confirm the presence of proteins in a food item?
Answer:

  1. No, proteins are not present in all food items.
  2. The presence of proteins in food items can be confirm by doing a test with copper sulphate and sodium hydroxide solutions.

AP Board 7th Class Science Solutions 1st Lesson Food for Health

Question 11.
After doing the above test you will come to know that proteins are not present in ghee. What would be there in it?
Answer:
Fats are present in ghee.

Question 12.
When we eat curd rice our palm becomes oily. Why does it happen?
Answer:
The butter present in the cu d makes the palm oily.

Question 13.
The paper used to pack Bajji or Pakodi etc. ………. becomes transluscent here and there. Why?
Answer:
Oil present in the bajji or pakodi, poori, etc. make the paper transparent.

7th Class Science Textbook Page No. 7

Question 14.
Do you know why elders suggest us to take green leafy vegetables regularly?
Answer:

  1. Green leafy vegetables contain minerals and vitamins.
  2. They protect our body and give good health.

7th Class Science Textbook Page No. 8

Question 15.
What are the reasons for anaemia?
Answer:
Anaemia can have many causes including dietary deficiency, lack of iron, vitamin B12 in the diet.

Question 16.
Why do students get vision problems?
Answer:

  1. Vitamin A deficiency is one of the most common causes of eye problems.
  2. Vitamin E and Zinc deficiency may also cause for eye problems.

Question 17.
Brahmanandam felt difficultly to see the objects in dim light. So he prefers to avoid night journeys. Do you know what we call such a problem?
Answer:
This problem is called night blindness. It is due to lack of Vitamin A.

7th Class Science Textbook Page No.9

Question 18.
What food should be taken to prevent night blindness?
Answer:
To prevent night blindness vitamin A is required.

Question 19.
What happens due to deficiency of vitamin K?
Answer:
Delay in clotting of blood.

AP Board 7th Class Science Solutions 1st Lesson Food for Health

Question 20.
Why are infants exposed to mild sunlight for a short time in the morning?
Answer:

  1. Body prepares vitamin D by using sunlight.
  2. Vitamin D is very important for bones and teeth.

Question 21.
Why it was advised to take vitamin C in Covid -19 period? Discuss.
Answer:
Vitamin C plays an important role in increasing disease resistant or immunity.

Question 22.
Only sour fruits contain vitamin C. Is it true?
Answer:
Yes. It is true.

7th Class Science Textbook Page No. 11

Question 23.
Nalini got a doubt whether water is also a nutrient or not? What do you think?
Answer:
Water does not contain any nutrients.

Question 24.
Do you think drinking water is the only way to provide water to our body?
Answer:
Not only drinking water, many food items like milk, fruits, vegetables etc. are rich in water. They also provide water to our body.

Question 25.
How does water help in our digestive system?
Answer:
Water help free bowel movements in stomach and intestines.

7th Class Science Textbook Page No. 12

Question 26.
What happens if we do not take adequate water and fibres in the food?
Answer:
We may face some digestion problems due to inadequate fibres and water in the food. It causes constipation also.

Question 27.
What happens if we take a diet that lades some nutrients?
Answer:

  1. We may face some health problems if we take some nutrient deficient food.
  2. Deficiency diseases like Kwashiorkor, marasmus, anaemia, goitre, beriberi, scurvy, ricket etc., may get due to lack erf nutrients in our diet.

7th Class Science Textbook Page No. 14

Question 28.
Which food materials shoiild we take in large quantity?
Answer:
Carbohydrates, vegetables and fruits.

Question 29.
Which food materials should we take in very leas quantity?
Answer:
Fats and ghee, oily foods.

AP Board 7th Class Science Solutions 1st Lesson Food for Health

Question 30.
What will happen if we don’t take balanced diet?
Answer:

  1. Taking less than the requirement and more than the limit may lead to health problems.
  2. Children who do not take balanced diet may face growth and developmental problems.
  3. It we do not take balanced diet we will be prone to various diseases.

Question 31.
John suggested Qiarau to wash the hands and fruits before eating. Can you guess why John did so?
Answer:

  1. Fruits anti vegetables may contain bacteria and pesticides.
  2. Therefore, should be washed before eating.
  3. Our hands also contain harmful bacteria aud virus.
  4. So, we should wash hands with soap before eat anything.

Think & Respond

7th Class Science Textbook Page No. 11

Question 1.
Is it good to eat fruits and vegetables along with their peels? Discuss.
Answer:

  1. All the fruits and vegetable peels contain valuable nutrients and fibre.
  2. So, it is good to eat fruits and vegetables along with their peels like apple, grapes guava etc.
  3. But some fruits like papaya, jack-fruit, banana, pomegranate, watermelon, orange etc. should not eat because they contain harmful substances in their peels.

7th Class Science Textbook Page No. 13

Question 2.
How do the infants grow by taking only milk for few months?
Answer:

  1. Milk contains carbohydrates in the form of the milk sugar, iron, proteins, minerals such as calcium, zinc, vitamins like A, D, E and B.
  2. Hence, milk is considered as a wholesome food.
  3. So, infant can grow only with taking milk.

Activities and Projects

Question 1.
Prepare a diet chart to provide balanced diet to a twelve-year old child. The diet chart should include food items which are not expensive and are commonly available in your area.
Answer:
AP Board 7th Class Science Solutions 1st Lesson Food for Health 1

Question 2.
Collect information from your parents suggesting traditional foods and their nutritional values. Prepare a table with the data using the headings, serial number, name of the food, ingredients used and name of the food components present.
Answer:

Name of the food Ingredients used Name of the food components
1. Sunnundalu Black gram
Jaggery
Ghee
Proteins
Carbohydrates, Iron
Oil/ fat
2. Poornam Chanadal
Black gram
Rice flour
Oil
Proteins
Proteins
Carbohydrates
Oil/fat
3. Janthikalu / Chakralu Rice flour
Black gram powder
Ajwain
Salt
Oil
Carbohydrates
Proteins
Potassium, Calcium, Iron
Sodium
Oil/ fat

→ Students can add more food items like this.

Activities

Activitie – 1

Question 1.
Sisiritha found the following nutritional information on the pack of Baalamrutham supplied by the Anganwadi workers to her younger brother. Study that information and answer the following questions.
AP Board 7th Class Science Solutions 1st Lesson Food for Health a
→ Which components are in larger quantity? (in gms)
Answer:
Carbohydrates, Proteins and fats

→ Which components are in lesser quantity? (in mg or less)
Answer:
Vitamins and minerals

Lab Activity – 1

Question 2.
How do you test to confirm the presence of starch in potato?
Answer:
Aim: To confirm the presence of starch in potato.

What you need:
1. Dilute iodine solution (dissolve few iodine crystals in water until it turns into pale brown).
2. Potato piece.
3. Knife,
4. Plate,
5. Dropper.
AP Board 7th Class Science Solutions 1st Lesson Food for Health 3

How to do :
Take a piece of potato on a plate. Add two / drops of iodine on the potato piece. Observe if there is 1 any change in colour of potato. If starch is present, it will turn into blue-black.

What you see :
The potato piece turns into ______ colour. (blue -black)
What you learn: Starch is ______ in potato, (present / absent) (present)

Use the given materials to test and confirm the presence of starch.

Food Mens (Starch is) present / absent
1. Cooked rice
2. Egg yolk
3. Wheat f lour

Now, test the below material to find out the presence of starch.

Food Mens (Starch is) present / absent
1. Cooked rice Present
2. Egg yolk Absent
3. Wheat f lour Present

AP Board 7th Class Science Solutions 1st Lesson Food for Health

Lab Activity – 2

Question 3.
How do you confirm the presence of proteins in egg white?
Answer:
AP Board 7th Class Science Solutions 1st Lesson Food for Health 4
Aim: To confirm the presence of proteins in egg white.

Whai you need :

  1. 2% Copper sulphate solution (dissolve 2g Copper sulphate in KM) mi water)
  2. 10% Sodium hydroxide solution (dissolve Mg Sodium hydroxide in 300m/ water)
  3. Egg
  4. Test tube
  5. Two beakers
  6. Dropper.

How to do :
Take few drops of egg white in a test tube Add two drops of Copper sulphate and ten drops of Sodium hydroxide solution. Shake well and keep the test tube In a stand for few minutes. Observe for any change in the colour of the material. If the colour of the material turns violet, it contains protein.

What you see : The egg white turns into ______ colour. (violet)
What you learn: Protein is ______ in egg white, (present / absent) (present)
Now test the below material to find out the presence of proteins.

Food item Protein is present / absent
1. Soyabean flour
2. Ghee
3. Milk
Food item Protein is present / absent
1. Soyabean flour Present
2. Ghee Absent
3. Milk Present

Activity – 2

Question 4.
Write a test to confirm the presence of fat in groundnut seeds.
Answer:
Aim: To confirm the presence of fat in groundnut seeds.

What you need:

  1. Groundnut seeds
  2. Piece of white paper
  3. Ceramic mortar

How to do :
Take few groundnut seeds in a ceramic mortar and make a fine paste. Place the paste on the white paper and rub it for few seconds. Leave it for some time. If the white paper turns transparent or partially transparent then you can say that the groundnut seeds contain fat.

What you see :
The paper turns ______ (transparent/translucent/opaque) (translucent)

What you learn :
Fat is in ______ Groundnut seeds. (present/absent) (present)

Test the below materials to find out the presence of fat.

Food item Fat present / absent
1. Vada/ Bajji
2. Rice flour
3. Palakova

 

Food item Fat present / absent
1. Vada/ Bajji Present
2. Rice flour Absent
3. Palakova Present

Activity – 3

Question 5.
Observe the below table showing the details of few minerals.
AP Board 7th Class Science Solutions 1st Lesson Food for Health 5

Answer the following questions.
→ To get iodine, which food would you prefer?
Answer:
Sea – foods, iodized salt etc.

→ Write the names of food items that are rich in iron.
Answer:
Meat, dry – fruits, green leafy vegetables etc. are rich in iron.

AP Board 7th Class Science Solutions 1st Lesson Food for Health

Activity – 4

Question 6.
Write a test for vitamin C.
Answer:
Aim: To confirm the presence of vitamin C in lemon.

What you need:

  1. Lemon
  2. Iodine solution
  3. Piece of white paper
  4. Knife
  5. Dropper.

How to do :
Slice a citrus fruit. Place two or three drops of iodine solution on a piece of paper. Keep the cut side of the slice on the paper. Leave it for 15 minutes and observe. If vitamin C is present, the portion of the paper under the slice will get discoloured.

What you see :
The colour of paper under the lemon slice ______ (discoloured/remains same) (discoloured)

What you learn:
Vitamin C is ______ in lemon, (present/ not present) (present)

The substances which made the iodine paper more discoloured contains more vitamin C.

Activity – 5

Question 7.
Remember different food materials and classify them- according to the quantity of fibre they have. Discuss with your friends and fill the below table. One example is given for you.

More fibre Less fibre No fibre
Orange Grapes Milk

Answer:

More fibre Less fibre No fibre
Orange Grapes Milk
Leafy vegetables White rice Egg
Sweet potato Tomato Red meat
Ridge gourd Watermelon Fish
Beans Peach Poultry
Lentils Peeled potato Water
Oats
Nuts

Activity – 6

Question 8.
“Water helps in easy movement of food in intestine.” Explain the given sentence with an activity.
Answer:
Aim: To know the use of water.

What you need :

  1. Piece of Sponge
  2. Plastic Pipe
  3. Water
  4. Bucket.

How to do:
Take a piece of sponge and try to move through a pipe. It moves with some difficulty. Remove the sponge from the pipe. Dip it in water and try to move it again through the pipe and observe.

What you see : Sponge moves freely in the pipe.
What you learn: Water helps in ______ movement of material in narrow tubes like intestine. (easy)

AP Board 7th Class Science Solutions 1st Lesson Food for Health

Activity – 7

Question 9.
Here is a list of food items that we eat generally. Categorise them according to the headings given in the box below.
Grains, roots, tubers, oils, fats, sweets, pulses, nuts, seeds, dairy products, meat, poultry, fish, eggs, dark green leafy vegetables, fruits, vegetables.

Energy giving food – Carbohydrates and fats Body building foods – Proteins Protective foods – Vamins and Minerals

 

Energy giving food – Carbohydrates and fats Body building foods – Proteins Protective foods – Vamins and Minerals
Grains Pulses Dark green leafy vegetables
Roots Nuts Fruits
Tubers Seeds Vegetables
Oils Dairy products
Fats Meat
Sweets Poultry, Fish. Eggs
Dairy products

→ Have all these included in your daily diet?
Answer:
Yes, All these are included in our daily diet.

→ In what quantities are you taking them?
Answer:
i) Carbohydrates are taking in adequate quantities.
ii) Fats are taking in very less quantities.
iii) Proteins are taking in moderate quantities.
iv) Vitamins and minerals are taking in plenty.

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