Chapter 6. Natural Vegetation and Wild Life Class 7 Geography Solutions English Medium-Additional Questions With Solutions

NCERT Solutions Class 7 Geography English Medium

Chapter 6. Natural Vegetation and Wild Life

Topic: Additional Questions With Solutions

Additional - Question:

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Que: Now can you tell why Salima saw changes in the natural vegetation as she climbed higher and higher? What type of vegetation did she see in the Himalayas starting with the foothills and going to the higher altitudes? 

Ans: Salima saw changes in the natural vegetation as she climbed higher and higher because of the following reasons:

1. Change in a climate with an increase in height.

2. Slope

3. The thickness of the soil.

Types of vegetation she saw

1. Sal and teak forests

2. Coniferous forests

3. Rhodo-dendrous

4. Short grass

Que: Like Salima, when you go to visit any new place, notice the type of natural vegetation occurring there and try to think of factors responsible for the growth of such vegetation in that habitat.
Note down if any human interference has taken place in that area in terms of deforestation, grazing, cultivation of cash crops, constructional activities, etc. 

Ans: In October to Nainital.

• Alpine and Montane vegetation.

Factors:

• Cold climate.
• Heavy rainfall.
• Mountainous soil.

Yes, for habitation and commercial activities.

Que: Where in India do tropical evergreen and tropical deciduous forests occur? Name the states.
Which type of forest dominates most parts of India?
Ans: 

1. Western slopes of western ghats, N.E. India—Tropical evergreen (Maharashtra, Karnataka, Kerala, Goa, and N.E. states)

2. Central India—Deciduous (M.P., Chhattisgarh), Jharkhand etc.

3. Tropical Deciduous.

Que: Look around in your surroundings and find out the articles made of hardwood and softwood.
Find out and learn the names of few trees of your locality. 

Ans:

Hardwood: Steppers, bridges, furniture, doors, windows.

Softwood: Matches, packing material, false ceiling, boats etc.
Mango, neem, jamun, shisham, kikar, peepal, sal.

Que: Can you name the great desert of India? Name some of the common animals of the desert. 

Ans:

Thar is the great Indian desert.
Camel, Snakes, lizards and many insects are found here.

Que: How is height of land and the character of vegetation related with each other? 
Ans: With the change in height the climate changes and that changes natural vegetation.

Que: Where are shrubs found?

Ans: Shrubs are found in the dry regions.

Que: Why do trees of tropical evergreen forests not shed their leaves altogether?

Ans: It is because there is no particular dry season.

Que: What is the special feature of tropical evergreen forests?

Ans: Thick canopies of the closely spaced trees are found here. As a result sunlight do not reach inside the forest.

Que: Name the trees found in the tropical deciduous forests.

Ans: Sal, teak, neem and shisham.

Que: Where are temperate evergreen forests located?

Ans: These forests are located in the mid-latitudinal coastal region.

Que: Why are only citrus fruits cultivated in Mediterranean regions? 

Ans: It is because people have removed the natural vegetation in order to cultivate citrus fruits.

Que: Mention one special feature of coniferous forests.

Ans: These forests have tall and softwood evergreen trees.

Que: Name the animals found, in the coniferous forests.

Ans: Silver fox, mink, and polar bear.

Que: Name the animals found in tropical grasslands. ,

Ans: Elephants, zebras, giraffes, dear and leopards.

Que: Where are Savannah grasslands found?

Ans: They are found in East Africa.

Que: Where are Llanos grasslands found?

Ans: They are found in Venezuela.

Que: Which type of grassland Prairie is?

Ans: Prairie is temperate grassland.

Que: Where are tropical deserts located?

Ans: They are located on the western margins of the continents.

Que: Name some animals found in polar regions.

Ans: Seal, walruses, musk-oxen, Arctic owl, polar bear, and snow foxes.

Que: Mention the major features of tropical evergreen forests.

Ans: Major features of tropical evergreen forests are:

• These forests are so dense that thick canopies are developed which do not allow the sunlight to penetrate inside the forest.
• As there is no particular dry season, the trees do not shed their leaves altogether. This keeps the forest evergreen.
• Hardwood trees such as rosewood, ebony and mahogany are found here.

Que: Mention the features of Mediterranean trees.

Ans: These trees adapt themselves to dry summers with the help of their thick barks and wax-coated leaves which help them reduce transportation.

Que: Write a short note tropical grasslands. 

Ans: Tropical grasslands occur on either side of the equator and extend till the tropics. This vegetation grows in the areas of moderate to low amount of rainfall. The grass can grow very tall, about 3 to 4 metres in height. Savannah grasslands of Africa are of this type. Common animals found here are elephants, zebras, giraffes, deer and leopards.

Que: Give cm account of the natural vegetation and wildlife found in the polar regions.

Ans: Polar regions are extremely cold. Therefore the growth of natural vegetation is very limited here. Only mosses, lichens and veiy small shrubs are found here. They grow during the very short summer. This is called Tundra type of vegetation. This vegetation is found in the polar areas of Europe, Asia and North America. The animals found here have thick fur and thick skin which protect them from the cold climatic conditions. Seal, walruses, musk-oxen, Arctic owl, Polar bear and snow foxes are some of the animals found in these regions.

Que: Discuss various types of forests. 

Ans: Types of forests:                                                                                ,

1. Tropical evergreen forests

2. Tropical deciduous forests

3. Temperate evergreen forests

4. Temperate deciduous forests

5. Mediterranean vegetation

6. Coniferous forests

1. Tropical evergreen forests. These forest are very dense and found in the regions near the equator and close to the tropics. These regions receive heavy rain throughout the year. The trees of these forests do not shed their leaves altogether and therefore they remain green all the time. Hardwood trees like rosewood, ebony and mahogany are found here.

2. Tropical deciduous forests. These forest are found in the regions which experience seasonal changes. Trees shed their leaves in the dry season to conserve water. The hardwood trees like sal, teak, neem and shisham are found here. Animals like tigers, lions, elephants, langoors and monkeys are common in these forests.

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