DAV Class 8 SST Chapter 3 Question Answer Natural Resources Vegetation and Wildlife

If you are looking for DAV Class 8 SST Chapter 3 Question Answer Natural Resources Vegetation and Wildlife of we and our world social science book, then you are at right place. Here at SOLUTIONGYAN.Com, Class 8 Social Science of chapter 3 exercises provided at the end of the chapter will be a useful resource for DAV Class 8 SST exam.

Here, we provide complete solutions of DAV Class 8 SST Chapter 3 Natural Resources Vegetation and Wildlife of We and Our World SST Textbook. These exercise of sst chapter 3 (Geography) contains 5 questions and the answers to them are provided in the DAV Class 8 SST Chapter 3 Question Answer Natural Resources Vegetation and Wildlife.

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DAV Class 8 SST Chapter 3 Natural Resources Vegetation and Wildlife Solutions

DAV Class 8 Social Science Chapter 3 Natural Resources Vegetation and Wildlife Solutions is given below. Here DAV Class 8 SST chapter 3 question answer is provided with detailed explanation.

Highlights

• Tick the correct option
• Fill in the blanks
• Write a technical term
• Answer the following questions in brief
• Answers the following questions

DAV question answer of Class 8 Geography of We and Our World Social Science Textbook is the best source for the students to self-analyse their performance. DAV Class 8 students are more likely to score good marks in SST exam if they practise DAV Class 8 SST Chapter 3 Question Answer Natural Resources Vegetation and Wildlife regularly.

DAV Class 8 SST Chapter 3 Question Answer

A. Tick the correct option.

1. Which term is used for the plant community which grows without human interference?

Answer: natural vegetation

2. Which vegetation grows in hot and humid regions of the world?

Answer: Tropical Evergreen Forests

3. The most common trees of Tropical Deciduous Forests are-

Answer: Sal and teak

4. Trees of Mediterranean Forests are have-

Answer: spiny and waxy leaves

5. The area under forests is depleting due to-

Answer: human interference

B. Fill in the blanks.

1. The assemblage of plant species in an environment is known as ___________.

2. ___________ and ___________ are two important factors for the plant growth.

3. Humus helps to maintain ___________ of the soil.

4. Hardwood trees have broad leaves to permit ___________ of surplus moisture.

5. Teak is the commercially important tree of the ___________ forests.

Answer: (1) natural vegetation (2) Temperature, rain fall (3) fertility (4) transpiration (5) Tropical Deciduous.

C. Write a technical term or an appropriate word for each of the following statements.

1. The forests which do not shed all their leaves at the same time.

Answer: Tropical Evergreen Forests

2. In this forest, summers are dry and moderate rain falls in winter.

Answer: Mediterranean Forests

3. Conical shaped trees are common in these forests.

Answer: Temperate Softwood Forests

4. The act or process of creating new forests by planting saplings.

Answer: Afforestation

5. The Temperate Softwood Forests found in the southern slopes of Himalayas.

Answer: Mountain Forest

D. Answer the following questions in brief.

1. Why are the Tropical Rain Forests known as evergreen forests?

Answer: The tropical rainforests always appear green as their trees never shed their leaves at any time of the year. Therefore, they are called an evergreen forest.

2. Why do the Tropical Deciduous Forests shed their leaves during the summer season? Name two such trees.

Answer: The Tropical Deciduous Forests shed their leaves during the summer season to conserve moisture. e.g., Sal and Teak.

3. Write any three characteristic features of the trees found in the Mediterranean Forests.

Answer: Three characteristic features of the trees found in the Mediterranean Forests are:

• The trees are widely scattered.
• The trees have long roots and thick bark.
• They have spiny, waxy and leathery textured leaves.

4. Distinguish between a national park and a wildlife sanctuary.

Answer: National Park

• It is a well-defined area for the protection of wildlife.
• Collection of firewood, timber from any part of the forest is totally prohibited.
• Visitors can only visit the park. No one has the right to use any forest product.
• Example: Grand Canyon National Park of USA.

Wildlife sanctuary:

• It is a declared protected area in which limited human activities are permitted.
• Hunting of animals and cutting of trees are banned.
• People can collect firewood, timber and medicinal herbs in a moderate amount which can be used only for research purposes.
• Example: Manas Wildlife Sanctuary of India.

5. Suggest any three important measures for the protection of forests.

Answer: Three important measures for the protection of forests are:

• Afforestation.
• Large scale cutting of forest trees must be stopped.
• Forest must be protected from insects and pests.

E. Answer the following questions.

1. What is meant by natural vegetation? How do temperature and rainfall affect its distribution? Explain with examples.

Answer: The assemblage of plant species in an environment is known as Natural vegetation.

Temperature and rainfall affect the growth and distribution of vegetation.

Example: In the areas of heavy rainfall, the forests are thick and dense. As the rainfall decreases, the concentration of trees also reduces. Similarly in deserts where temperature remains high, Shrubs and short trees are found but in cold regions where temperature remains low, plants occur in patches in the form of mosses and lichens.

2. Highlight any five points of distinction between Tropical Deciduous Forests and Coniferous Forests.

Answer: Tropical Deciduous Forests:

• They shed their leaves during dry seasons.
• They have the types of trees which have hard wood.
• These forests receive 100-200 cm summer rainfall.
• Another name of these forests is the monsoon forests.
• Important trees found are sal, teak, neem and shisham.

Coniferous Forests:

• They retain their leaves throughout the year.
• The wood in coniferous forests is generally soft.
• These forests receive the rain in the form of snow in winter.
• Coniferous forests are also known as Taiga.
• Dominant trees in coniferous forests are pines, spruces and larches.

3. ‘Forests are essential for maintaining an ecological balance.’ Justify the statement with suitable arguments.

Answer: Forests are essential for maintaining an ecological balance:

• Forests provide safe habitat to the wild animals.
• Many people depend on forests for their livelihood.
• Forests help to prevent soil erosion.
• It helps to produce humus which is helpful to maintain fertility of soil.
• It helps us to breathe by converting carbon dioxide into oxygen.

4. Explain the importance of wildlife.

Answer: Importance of wildlife are:

• Wildlife is very essential to maintain ecological balance on earth’s surface.
• Wildlife is important for its aesthetic values and ecological balance.
• The beauty of wildlife boosts tourism and creates jobs for the people.
• Animal’s behavior changes at time of natural disasters like tsunami and earthquake.
• Dead and decaying plants and animals also produce humus which is helpful as to maintain the fertility of the soil.

5. How are human beings responsible for the depletion of vegetation and wildlife?

Answer: Human beings responsible for the depletion of vegetation and wildlife in this way:

• Agricultural expansion.
• We cleared forests for mining of minerals and soils.
• We used wood for paper, furniture, ships etc.
• Large scale development projects.
• Habitat destruction, hunting of animals, over exploitation of various products.