20: Natural Regions Of The World : Icse-ix-geography

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Qstn #1
There is a uniformly high temperature in the Equatorial region.
Ans : Due to regular vertical rays of the sun the temperature always remains high. This region always comes directly on the front of the sun.

Qstn #2
Deciduous trees shed their leaves in the dry season.
Ans : Deciduous trees shed their leaves in the dry season to preserve the moisture which could be lost by transpiration through the leaves. After the slight winter rainfall the trees again sprout with new leaves.

Qstn #3
In the Tropical Desert climate region, Trade Winds are dry.
Ans : In the Tropical Hot Desert region, the Trade Winds blow from land towards the sea, so
these cannot gain moisture and are dry and there is no rainfall and a prolonged dry and hot season.

Qstn #4
In the Mediterranean region of Europe, winds blow deep inside the land.
Ans : This region falls in the belt of Westerlies, which blow with a great force from S.W. to N.E. and enter deep into the land region. Due to coming in contact with the Cold Polar Frost these are accompanied by temperate cyclones with great speed covering long distance from west to east from the Mediterranean sea upto China crossing the whole mid-Asia continent.

Qstn #5
Tropical grasslands have great potential for the cultivation of crops like cotton and coffee.
Ans : Due to ideal temperature of 25° C to 30° C and quite hot summer season and ample rainfall average about 100 cm, present suitable condition for plantation crops like cotton and coffee.

Qstn #6
The Taiga region is sparsely populated.
Ans : The Taiga region is covered with extensive belt of evergreen coniferous trees with lumbering and fur industry as main occupations. So, these forests are kept safe and no deforestation is done for any agricultural occupation and human settlements, so is less populated.

Qstn #7
There are no trees in the Tundra Region.
Ans : The Tundra region is covered with perpetual snow and the temperature away below freezing point does not allow the : growth of trees. Only moss and small flowery plants and lichen etc grow in short summer season only with 10°C temperature at the most. Inspite of the six months’ sunlight, the snow cover reflects the insolation.

Qstn #8
Patagonia is a desert in the rain shadow of the Andes.
Ans : Patagonia is a cold desert in South America due to being in the rain shadow area of the Andes and does not get rainfall and is a cold and dry desert with its major part in Argentina.

Qstn #2
State the factors of responsible for climatic classification of natural regions.
Ans : The amount of insolation decreases as the latitude increases. So there is difference in different seasons in differing latitudes, e.g., the equatorial region remains hot and wet throughout the year, the tropical monsoon land experiences particular summer, rainy,
autumn winter and spring seasons. The tropical deserts are almost dry and hot. The temperate grasslands are noted for short summer and long winters. The Mediterranean region is noted for warm summer and rainy winter. Taiga region has a long cold winter and very short summer. Tundra region is known for perpetual snow due to freezing temperature all the year. Due to the tilted axis of the earth. North and South Polar region experience six months day and six months night respectively with continuous lowest temperature below -58°C.

Qstn #3
Give a brief account of Rainforests together with their location and types of trees.
Ans : Tropical rain forest are found in equatorial region due to excessive rainfall and temperature. These are known as ‘Selvas’ in Amazon basin. Other regions are Zaire basin, Indonesia, Malaysia and S. Philippines. Main types of trees are ebony, mahogany, cinchona, rosewood, rubber etc.

Qstn #4
Discuss the vegetation of the Tropical Monsoon type climate.
Ans : Due to particular rainy season followed by autumn and winter, this type of climate has deciduous vegetation. The coastal parts have tropical evergreen Rain Forests slightly different from equatorial vegetation, these are rosewood, ebony, sisam, baniboo etc. with much height upto 60 meters. Deciduous tree are found in khair, Tendu etc.