Give reasons.
(i) The animals in Polar region have thick fur and thick skin.
(ii) Tropical deciduous trees shed their leaves in the dry season.
(iii) The type and thickness of vegetation changes from place to place.

Solution

(i) The Polar region is characterised by extremely cold weather. The animals found in this region have thick fur and thick skin to protect themselves from the cold climatic conditions.

(ii)The tropical deciduous trees are found in regions characterised by seasonal changes. The trees shed their leaves in the dry season to conserve water.

(iii)Growth of vegetation depends upon factors like temperature, moisture, slope and thickness of soil. Due to the variations in these factors from place to place, the type and thickness of vegetation also varies from place to place.

Some More Questions From Natural Vegetation and Wildlife Chapter

Answer the following questions.
(i) Which are the two factors on which the growth of vegetation mostly depends?
(ii) Which are the three broad categories of natural vegetation?
(iii) Name the two hardwood trees commonly found in tropical evergreen forest.
(iv) In which part of the world are tropical deciduous forests found?
(v) In which climatic conditions are citrus fruits cultivated?
(vi) Mention the uses of coniferous forest.
(vii) In which part of the world is seasonal grassland found?

Tick the correct answer.
(i) Mosses and lichens are found in

(a) Desert Vegetation

(b) Tropical evergreen forest

(c) Tundra vegetation

(ii) Thorny bushes are found in

(a) Hot and humid tropical climate

(b) Hot and dry desert climate

(c) Cold polar climate

(iii) In tropical evergreen forest, one of the common animals is

(a) Monkey

(b) Giraffe

(c) Camel

(iv) One important variety of coniferous forest is

(a) Rosewood

(b) Pine

(c) Teak

(v) Steppe grassland is found in

(a) S. Africa

(b) Australia

(c) Russia

Match the following.

(i) Walrus

(a) Softwood tree

(ii) Cedar

(b) An animal of tropical deciduous forest

(iii) Olives

(c) A polar animal

(iv) Elephant

(d) Temperate grassland in Australia

(v) Campos

(e) Thorny shrubs

(vi) Downs

(f) A citrus fruit

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(g) Tropical grassland of Brazil