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Important Questions Class 7 Social Science Our Environment Chapter 6

Important Questions Class 7 Social Science Our Environment Chapter 6

Geography is the study of the planet’s physical features and environment, including how human actions affect these aspects and how they are inversely related. This subject also includes research on population distribution patterns, land use, resource availability, and industrial development. Class 7 Social Science Our Environment’s sixth chapter is Natural Vegetation and Wildlife. The growth of plants is regulated by moisture and temperature. Additionally, it relies on elements like soil thickness and slope. Forests, grasslands, and shrubs are the three basic groups into which natural vegetation is typically divided. Tropical evergreen forests, tropical deciduous forests, temperate deciduous forests, Mediterranean vegetation, temperate evergreen forests, and coniferous forests are the many different forms of natural vegetation. There are three types of grasslands: tropical, temperate, and thorny shrubs. To better grasp the chapter, refer to Chapter 6 Class 7 Social Science Our Environment Important Questions. Students can easily access all this and more on the Extramarks website.

Numerous sources have repeatedly explained geography. It is difficult for students to memorise everything. At Extramarks, we acknowledge the role of answering the important questions in a chapter. The NCERT Textbook, other reference books, previous exam questions, and other materials were used to create the Social Science Our Environment Class 7 Chapter 6 Important Questions by Extramarks specialists. Our Social Science specialists have created a list of step-by-step answers to help students comprehend each chapter. Class 7 Social Science Our Environment Chapter 6 Important Questions are available to students who register with Extramarks.

In addition to Important Questions Class 7 Social Science Our Environment Chapter 6, students can access materials like NCERT Solutions, CBSE revision notes, past year question papers, NCERT books, and much more can be found easily on the Extramarks website.

Important Questions Class 7 Social Science Our Environment Chapter 6- with Solutions

Social Science Academicians at Extramarks have designed an entire list of Important Questions Class 7 Social Science Our Environment Chapter 6 using various sources. Temperature and moisture control how quickly plants develop. It also depends on factors such as slope and soil thickness. The three main categories of natural vegetation that are commonly separated are forests, grasslands, and shrubs. The many types of natural vegetation include coniferous forests, Mediterranean vegetation, tropical evergreen forests, tropical deciduous forests, temperate evergreen forests, and temperate deciduous forests. Three kinds of grasslands are thorny bushes, tropical, and temperate. These questions and solutions help students better comprehend Natural Vegetation and Wildlife.

Mentioned below are a few Important Questions Class 7 Social Science Our Environment Chapter 6 and their solutions:

Question 1. In which part of the world is seasonal grassland found?

Answer 1. Seasonal grasslands can be found in the interior regions of the continent and the mid-latitudinal zone.

Question 2. What did Salima notice when she saw the images of the dense forests?

Answer 2. The images of dense woodlands were displayed to Salima by her father. He responded to the topic of why the trees are being removed by saying that the locals needed land for farming and habitation.

Salima wondered where we would obtain oxygen, lumber, fruits, etc., if all the trees were cut. What will happen to wildlife habitats?

Question 3. On which two factors does the growth of vegetation mostly depend?

Answer 3. Temperature and moisture are two elements that affect plant growth.

Question 4. Describe the main characteristics of tundra vegetation.

Answer 4. The major characteristics of tundra vegetation are:

  • The polar areas are quite chilly.
  • There is relatively little room for natural plants to grow here.
  • Only mosses, lichens, and tiny plants flourish during the brief summer.
  • North America, Asia, and Europe’s polar regions all support this vegetation.
  • For protection against the harsh temperature, the animals in this area have thick hair and skin.
  • Common creatures in this area include seals, walruses, reindeer, mink (musk oxen), Arctic owls, polar bears, and snow foxes.

Question 5. Mention the uses of coniferous forests.

Answer 5. Matchboxes and shipping boxes are made from the softwood evergreen trees found in coniferous forests. They are also used to create pulp, which is then used to create newspaper and paper.

Question 6. List the main characteristics of thorny bushes.

Answer 6. Dry desert areas, such as those in tropical and subtropical regions, are home to thorny bushes:

  • Because of the severe heat and low rainfall, there is little plant cover.
  • The trees feature extensive roots, thick stems, wax-coated leaves, and thorns to decrease transpiration.
  • Cacti and other prickly plants are the predominant instances of vegetation.
  • Common animals include camels, foxes, wolves, goats, and sheep.

Question 7. Which are the three broad categories of natural vegetation?

Answer 7. Three categories can be used to categorise natural vegetation:

  • Forests—a place with plenty of rainfall and warm temperatures for plant development.
  • Plants that thrive in areas with moderate rainfall are found in grasslands.
  • Shrubs are plants that thrive in arid climates.

Question 8. List the main characteristics of temperate grasslands.

Answer 8. The primary characteristics of temperate grasslands:

  • Temperate grasslands can be found in the middle latitudes and in the interior of the continents.
  • Here, the grass is often short and nutrient-rich.
  • Wild buffaloes, bison, and antelopes are prevalent in temperate grasslands.

Question 9. In which climatic conditions are citrus fruits cultivated?

Answer 9. Citrus fruits are cultivated in areas with hot, dry summers and warm, wet winters. Some of these citrus fruits are oranges, figs, olives, and grapes.

Question 10. Name the primary characteristics of tropical grasslands.

Answer 10. These are the primary characteristics of tropical grasslands:

  • Tropical grasslands are found on both the sides of the equator and up to the tropics.
  • In regions with moderate to little rainfall, grass flourishes.
  • They may reach heights of three to four metres.
  • African savannah grasslands, for instance.
  • In tropical grasslands, it’s typical to see leopards, elephants, zebras, giraffes, deer, and other wild creatures.

Question 11. Name the two hardwood trees commonly found in tropical evergreen forests.

Answer 11. Rosewood and mahogany are two hardwood trees that are frequently found in tropical evergreen forests.

Question 12. Describe the main characteristics of Mediterranean vegetation.

Answer 12. Here are the major characteristics of Mediterranean vegetation:

  • Temperate evergreen and deciduous trees cover much of the east and north-east edges of the continents.
  • The continents’ western and southern western boundaries are distinct from one another.
  • Most of its locations in Europe, Africa, and Asia are near the Mediterranean Sea.
  • Outside of the whole Mediterranean area, this plant may also be found in South-West Africa and California in the United States.
  • These areas are known for having scorching, dry summers and warm, wet winters.
  • People have eliminated the native flora in this area to produce what they want, which has resulted in the widespread cultivation of citrus fruits, including oranges, figs, olives, and grapes. The fauna in this area is scarce.

Question 13. In which part of the world is tropical deciduous forests found?

Answer 13. Monsoon forests, sometimes referred to as tropical deciduous woods are found in areas that change seasons. India, northern Australia, and America are some of these regions.

Question 14. Identify the main characteristics of a temperate deciduous forest.

Answer 14. The principal characteristics of temperate deciduous forests are:

  • In higher latitudes, temperate deciduous woods are more prevalent.
  • They may be found in Chile, New Zealand, China, and the northeastern United States.
  • They can also be found in Western Europe’s coastal areas.
  • During the dry season, they lose their leaves.
  • Oak, ash, beech, and other common trees may be found in these woodlands.
  • These woodlands are home to various species, including deer, foxes, and wolves.
  • Pheasants and monals are frequent bird species.

Question 15. Where may one find temperate evergreen forests?

Answer 15. Temperate evergreen woods can be found along mid-latitude coastal locations. These woods are typically found on the eastern edges of continents like the south-eastern United States, south China, or south-eastern Brazil. In temperate evergreen woods, you can find hard and soft trees, such as oak, pine, and eucalyptus.

Question 16. Explain the characteristics of tropical deciduous forests.

Answer 16. Here are some characteristics of tropical deciduous forests:

  • Monsoonal woods are those found in tropical regions.
  • They are widespread in Central America, northern Australia, and a huge portion of India.
  • Seasonal variations are present in these areas.
  • In order to save water during the dry season, trees lose their leaves.
  • These woods contain hardwood trees.
  • Sal, Teak, Neem, and Shisham are their names.
  • Hardwood trees are excellent sources of building materials, transportation, and furnishings.
  • Elephants, tigers, and lions are common creatures in these areas.

Question 17. List the characteristics of tropical evergreen forests.

Answer 17. Tropical rain forests are often referred to as tropical evergreen woods. They may be found close to the tropics and close to the equator.

  • These areas are very warm.
  • They get a lot of rain there every year.
  • The trees do not completely lose their leaves if there is no dry season.
  • They’re known as evergreens.
  • Even during the day, the densely packed trees’ high canopies prevent sunlight from penetrating the jungle.
  • Common hardwood trees include rosewood, ebony, and mahogany.

Question 18. What personal experiences did Salima’s father share with her on the many types of native plants seen throughout other continents? What did Salima discover?

Answer 18. Salima told her father about her journey to the Himalayas.

  • Her father has been to several locations.
  • He described to Salima how he had seen diverse types of plants in various locations across many continents.
  • He talked about the subpolar areas’ coniferous woods.
  • Thorny plants in arid areas.
  • Damp areas with dense tropical hardwood forests, among other things.
  • Salima came to the realisation that the Himalayas feature practically every type of plant that can be seen travelling from the equator to the poles.

Question 19. What do Salima’s observations lead us to conclude?

Answer 19. Salima’s findings lead us to believe that plant and land height types are closely related.

  • The climate varies as height rises.
  • Natural vegetation varies due to climate.
  • The development of plants is influenced by moisture and temperature.
  • Additionally, it relies on elements like soil thickness and slope.

Question 20. What kind of natural vegetation is there?

Answer 20. There are three major groups of natural vegetation:

  • Forests: They flourish in hot, wet climates.
  • Grasslands: Grasslands flourish in areas with average rainfall.
  • Scrubs and thorny bushes: Scrubs and thorny bushes flourish in arid climates.

Question 21. Give reasons for the following statements.

  • The animals in the polar region have thick fur and thick skin.
  • Tropical deciduous trees shed their leaves in the dry season.
  • The type and thickness of vegetation change from place to place.

Answer 21. The reasons for the points mentioned above are:

  1. The animals in the polar region have thick fur and thick skin: Animals living in the polar zone have thick hair and skin as a defence against the icy climate. Due to its chilly environment, this area has little native vegetation.
  2. Tropical deciduous trees shed their leaves in the dry season: Large portions of India, the northern half of Australia, and America are home to tropical deciduous forests. Seasons alter in these regions; thus, the tropical deciduous trees lose their leaves during the dry season to conserve water.
  3. The type and thickness of vegetation change from place to place: Because of variations in climate, landform, temperature, and moisture, vegetation varies in type and thickness from place to place. Different types of vegetation support a variety of plants and animals.

The section given above of Important Questions Class 7 Social Science Our Environment Chapter 6 covers all the chapter’s important concepts.

Benefits of Solving Important Questions Class 7 Social Science Our Environment Chapter 6

Extramarks has recently launched the best way to prepare for the upcoming examination. The important questions of each chapter have proven to be a game changer while preparing for the examination. Students are often recommended to study important questions for a subject like Geography that requires some significant amount of reading. Students gather confidence by answering the important questions and going over their solutions.

Mentioning below are some benefits of solving Important Questions Class 7 Social Science Our Environment Chapter 6:

  • These solutions help students save time while preparing for the upcoming examination and cover the entire chapter.
  • Important Questions Class 7 Social Science Our Environment Chapter 6 covers the concepts of the entire chapter- Natural Vegetation and Wildlife.
  • Students can entirely rely upon these important questions as they are made following all the guidelines laid by CBSE.

Extramarks provides comprehensive learning solutions for students from Class 1 to Class 12. Along with important questions and solutions, we have abundant resources available on our website. Students can click on the links given below to access some of these resources:

Q.1 What does the word ‘forest’ denote?

Ans

The word ‘forest’ denotes a dense growth of trees and underbrush covering a large tract of land.

Q.2 Mention the two factors on which the growth of vegetation mostly depends?

Ans

The two factors on which the growth of vegetation mostly depends are:
1. Temperature
2. Rainfall

Q.3 Name the two hardwood trees commonly found in tropical evergreen forests.

Ans

Rosewood and Mahogany are the two hardwood trees commonly found in tropical evergreen forests.

Q.4 In which part of the world, the tropical deciduous forests are found?

Ans

They are found in India, North Australia and Central America.

Q.5 In which climatic conditions, citrus fruits are cultivated?

Ans

Hot dry summer and rainy mild winter.

Q.6 Mention the use of coniferous forests.

Ans

These types of forests are commonly used in making match boxes, making pulp, making news print papers etc. As, they have soft wood and they are not used in the timber industries in general.

Q.7 In which part of the world seasonal grassland is found?

Ans

Mid latitude and the interior parts of the continents are the parts where most of the grasslands are found.

Q.8 Define eco-system, food chain and food web.

Ans

Eco-system: A mutual and interdependent relationship between the biotic and abiotic organism.

Food chain: The transfer of energy between the different trophic level is called food chain, e.g. rose plant — aphids — beetle — chameleon — hawk.

Food web: In an ecosystem there are various food chains and many of these are cross-linked to each other. Ultimately all plants and animals in an ecosystem are part of this complex food web.

Q.9 Describe ecological efficiency.

Ans

A measure of the amount of energy in the biomass that is produced by one trophic level and is incorporated into the biomass produced by the next (higher) trophic level is termed as ecological efficiency. In other words, the percentage of energy transfer from one trophic level to other is called ecological efficiency.

Q.10 What is meant by conservation?

Ans

Conservation is the preservation, protection and effective use of the natural resources.

Q.11 What do you mean by wildlife sanctuary?

Ans

Wildlife sanctuary is the area protected through the management of human activities, to provide and maintain habitat to wildlife and the ecosystem that supports them. In other words, an area, usually in natural condition, which is reserved by a governmental or private agency for the protection of particular species of animals or birds.

Q.12 Examine the significance of Photosynthesis.

Ans

Photosynthesis is the process of converting light energy to chemical energy and storing it in the bonds of sugar. This process occurs in plants and some algae. Plants need only light energy, CO2, and H2O to make sugar. The process of photosynthesis takes place in the chloroplasts, specifically using chlorophyll, the green pigment involved in photosynthesis.

6H2O + 6CO2 ———-> C6H12O6+ 6O2

is the chemical equation of photosynthesis.

Q.13 Differentiate between the desert type of vegetation and tundra type of vegetation.

Ans

The basic differences between the two types of vegetation are as follows:

Desert vegetation

Tundra vegetation

1. Climatic Conditions: High temperature and low rainfall, have mainly dry conditions.

2. Location: Found mainly in the Tropical desert areas such as North Africa.

3. Important Vegetation: Cacti, thorny bushes and coarse grasses are the example of this type of vegetation.

1. Climatic conditions: Snow covered area.

2. Location: This type of vegetation is found around North Pole in Asia and in North America.

3. Important vegetation: Mosses, lichens and wild flowering shrubs are the example of this type of vegetation.

Q.14 How would you define tropical evergreen forests?

Ans

The Tropical evergreen forests are extended from 10º N to 10º S of the equator. As they are situated in the tropical areas on the earth these forests receive more rainfall and temperature than others. They do not shed their leaves in same time. In India Western Ghats and the Assam hills are the areas where these types of forests are found.

Q.15 Which regions are also known as the “Orchards of the world”?

Ans

The Mediterranean regions are known as the “Orchard of the World.”

Q.16 Mention the two major human activities which are responsible for degradation of bio-diversity in different parts of the world?

Ans

The major cause for degradation of bio-diversity by human activities is the urbanization and industrialization. These are the two major activities which are causing large scale degradation of biodiversity.

Q.17 Define Temperate Grassland?

Ans

The temperate grasslands are found in the interior of the continents. These grasslands are found in the 40º – 45º latitudes in both the hemispheres. In the middle latitudes these grasslands are known by different names such as Prairies in the North America, Pampas in the South America etc. These grasslands are best suited for cattle rearing.

Q.18 What are the basic characteristics of Mediterranean type of forests?

Ans

These types of forests are generally found in the western parts of the continents, mostly in the temperate regions of both the hemispheres. The major characteristic of these types of forests are:

1. Rainfall: These forests receive moderate rainfall in the summer months.

2. Vegetation characteristics: Broad leaves, long roots, and thick bark trees are found in these forests. They do not shed their leaves in the summer.

3. Major trees: Oaks, olives, figs, firs, cedars, and cypress are the main trees of these forests.

4. Major products: Some of the products derived from theses forests are nuts, olives, citrus fruits, and cork.

Q.19 Match the following with the code given below:

Column A Column B

A. Tropical Evergreen Forest

(i) Composed of rich mix of grasses and forbs

B. Tropical Deciduous Forest

(ii) They comprise both hard and soft wood trees.

C. Temperate grassland

(iii) They are also called tropical rainforest.

D. Temperate Deciduous Forest

(iv) They are the monsoon forests, which are found in the large part of India, Northern Australia and in Central America.

Ans

A – (iii),

B – (iv),

C – (i),

D – (ii)

Q.20 Name various temperate grasslands with their areas?

Ans

Grasslands are known by different names in different regions. Temperate Grasslands are known as:

1.Pampas in Argentina

2.Prairie in North America

3.Veld in South Africa

4.Steppe in Central Asia

5.Down in Australia

Q.21 Distinguish between temperate and tropical Grasslands?

Ans

Temperate Grassland

Tropical Grassland
1) Found in the interiors of the continents
2) The amount of precipitation is inadequate for growth of trees.
3) Grasses are shorter and less dense
4) Trees are almost absent.
5) They are colder and drier.
6) They are known a steppes, pampas, prairies etc.
7) Grasslands are home to flight less birds, rabbits, bears etc.		 1) They are found on either side of the equator till tropics
2) They have rainy season in which the grasses grow.
3) Grasses are long and dense
4) Trees are present.
5) They have long wet season followed by a dry period.
6) They are known as Campos, llanos, savanna
7) Animals found are elephant, tiger, antelopes etc.

Q.22 Distinguish between tropical rainforests and tropical deciduous forests?

Ans

Tropical Rainforest

Tropical Deciduous
1) They are known as evergreen forest.
2) They are found in areas of rainfall having more than 200cm.
3) Trees are very tall.
4) Trees have very thick canopies that are joined together.
5) Thick undergrowth is found
6) Trees do not have same time for shedding leaves.
7) They are never barren, so they are called evergreen forest.
8) They have large varieties of species.
9) Commercially non- exploitable		 1) They are known as monsoon forest.
2) They are found in areas of rainfall 50-200cm
3) Trees are of medium height.
4) Trees do not have very wide canopies.
5) No undergrowth
6) Trees shed their leaves at the same time.
7) They give a look of a barren forest.
8) They have trees of same variety.
9) Commercially exploitable

Q.23 Why do animals in tundra region have thick fur and skin?

Ans

Tundra region is a very cold area. The animals have thick fur or skin to protect themselves from extreme temperature conditions.

Q.24 Why wildlife is less in the Mediterranean region?

Ans

The wildlife is less in the Mediterranean region because people have removed the natural vegetation in order to cultivate what they want to. So, as the natural habitat is lost; therefore, number of animals have also declined.

Q.25 Discuss the ill effects of deforestation?

Ans

The ill effects of deforestation are:

1. Cutting of trees contribute to global warming

2. It reduces the rainfall because in the absence of transpiration from plants, the water vapour available for cloud formation reduces.

3. Destruction of plants harms the soil also, as the roots of the trees bind the soil together.

4. Cutting of trees has adverse effect on the population of wild life, as their number reduces with the loss of their natural habitat.

Q.26 Why does biodiversity varies as we move from equator to the poles?

Ans

The diversity of life found in an area depends on many things, including its climate and vegetation. Warm and humid areas support a great variety of life. Tropical areas are home to a great variety of living organisms whereas, the temperate regions have the limited variety of flora and fauna.

Q.27 What are the special features of desert plants?

Ans

Most of the desert plants have special features to help them survive in the harsh conditions. Some of them have long roots that penetrate deep into the ground in search of water, while some have waxy, spiny, hairy leaves to reduce the loss of water through transpiration. Some plants like cacti, store moisture in their thick fleshy stems.

Q.28 Give the various names of tropical grasslands along with their areas?

Ans

Tropical grasslands are called by different names in different areas, for e.g., they are called

Savanna in East Africa

Campos in Brazil

Llanos in Venezuela.

Q.29 Why are tropical rainforests dark throughout the year?

Ans

The trees of tropical rainforests have very wide and thick canopies. The canopies are so huge that it is difficult to identify the trees and they protrude into each other; as a result, the sunlight cannot penetrate and reach the ground. They form a huge cover; therefore, the forests remain dark all the time.

Q.30 What are the advantages deciduous forests have over the other forests?

Ans

The deciduous forests are commercially most exploited forests. These forests have same species of trees in a row so, the cutting becomes easier. The wood of these trees are generally hard wood and is used for making furniture, for transport purpose, in construction purposes. Also they are accessible as they lack any kind of undergrowth.

Q.31 Name 2 factors responsible for scanty vegetation in desert area.

Ans

The desert area has scanty vegetation due to:

1) Scanty rainfall

2) Scorching heat.

Q.32 Why do tropical deciduous forests shed their leaves in dry season?

Ans

Tropical deciduous forests shed their leaves in dry season to conserve water as otherwise the loss of water through transpiration is quite high and the moisture content is also limited.

Q.33 Why are tropical rainforests called evergreen forests?

Ans

The tropical evergreen are called evergreen forests because as there is no particular dry season, the trees do not shed their leaves altogether. Hence, they give a picture of a forest completely filled with leaves throughout the year.

Q.34 Name the main trees of tropical deciduous forests?

Ans

The main trees of deciduous forests are: teak, sal, shisham, neem.

Q.35 What is the other name for coniferous forest? Name the main trees of this forest.

Ans

The other name for coniferous forest is Taiga. The main trees of this forest are: chir, pine, cedar.

Q.36 How does cutting of trees affect the ecosystem?

Ans

Harm to plants and animals of an ecosystem can be disastrous. For example, grassland ecosystem supports antelopes and lions. If all the lions are killed, there would be no animal to kill antelope. As a result, the population of antelopes will increase unnaturally. They will eat up all the vegetation making the area a desert.

Q.37 Write a note on wildlife of India?

Ans

There is wide variety of wildlife found in India. Gir forests in Gujarat are the home of Asiatic lions. In the forests of Assam, we find one-horned rhinoceroses and elephants. The Great Indian Desert and the Rann of Kachchh are home of wild ass and camel. Wild goats, snow leopards and bears are found in the Himalayan region.

Q.38 Why do monsoon forests give a barren look?

Ans

Monsoon forest of India is also called deciduous forest, which have same variety of species. All the trees have same time period for shedding their leaves. In a year during a particular time, the trees shed their leaves. So, the branches become bare and the forest looks barren.

Q.39 What are the steps taken by the government to protect wildlife?

Ans

The government has taken many steps to preserve wildlife like:

1. Many national parks, wildlife sanctuaries, zoological gardens have been set up.

2. Hunting of animals has been banned.

3. The government has started many projects to protect the endangered species, such as Project Tiger, Project elephant etc.

4. It is also observing wildlife week, vanmahotsav to create awareness among people.

Q.40 Name some of the animals found in tundra vegetation.

Ans

The main animals of tundra vegetation are: Polar bear, Arctic owl, musk-oxen, seal, walruses and foxes.

Q.41 Where in India do tropical evergreen forests occur?

Ans

The main areas of tropical evergreen forest found in India are: Western Ghats, Andaman & Nicobar Islands, Assam and Arunachal Pradesh.

Q.42 Name the 2 adaptations of Mediterranean trees that help them in summers.

Ans

Mediterranean trees adapt themselves to dry summers with the help of their thick barks and wax coated leaves, which help them to reduce transpiration.

Q.43 Grasses grow in regions where the rainfall is not sufficient for the growth of most other plants. Why?

Ans

In the regions of low precipitation, the main vegetation are consists only of grasses. The deep and extensive root system of grass is able to absorb water from soil even in dry months. The thin blades of grass conserve water by reducing transpiration.

Q.44 Define virgin vegetation.

Ans

The area of natural vegetation which has not been exploited or interfered by humans till date are known as areas of virgin vegetation.

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Forests, grasslands, and shrubs are the three main natural vegetation types. These are the wild plants that can develop on their own without assistance from people. A wide range of living forms in forests, including animals, insects, plants, birds, etc., may be found. Tall trees or bushes with rich soil grow in grasslands. The bushes are the ones that predominantly flourish in arid regions. Extramarks provides solutions and a comprehensive study guide for students to begin studying for exams.