NCERT Solutions for Class 7 Geography Chapter 6 - Natural Vegetation and Wild Life

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Chapter 6 - Natural Vegetation and Wild Life Exercise 45

Solution 1

(i) The two factors on which the growth of vegetation mostly depends are temperature and moisture.


(ii) Forests, shrubs and grasslands are the three broad categories of natural vegetation.


(iii) Ebony and Rosewood are the two hardwood trees that are commonly found in the tropical evergreen forests.


(iv) Tropical deciduous forests are found in India, Central America and Northern Australia.


(v) Citrus fruits are known to be cultivated in the Mediterranean climate. They grow best in the regions that have hot, dry summers and mild, rainy winters.


(vi) Coniferous forests tend to be populated with softwood trees. The wood of the softwood trees is used for various purposes – pulp making for paper and newsprint, production of matchboxes, packing boxes, etc.


(vii) Seasonal grasslands can be found in the mid-latitudinal zones and in the interior parts of continents.

Solution 2

(i) – (c) Tundra vegetation

(ii) – (b) Hot and dry desert climate

(iii) – (a) Monkey

(iv) – (b) Pine

(v) – (c) Russia

Solution 3

 

(i) - (c) A polar animal

(ii) - (a) Softwood tree

(iii) - (e) A citrus fruit

(iv) - (b) An animal of tropical deciduous forest

(v) - (f) Tropical grassland of Brazil

(vi) - (d) Temperate grassland in Australia

 

Solution 4

(i) The Polar region is the coldest part of the Earth. The animals in the Polar region have to withstand and survive extremely cold climatic conditions. For this purpose, animals in the Polar region have thick fur and thick skin.

 

(ii) The tropical deciduous trees shed their leaves in the dry season so that they can save water.

 

(iii) Temperature, moisture and the slope and thickness of soil determine the growth of vegetation.  Since these factors change from place to place, the type and thickness of vegetation also varies from place to place.

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