NCERT Solutions for Class 7th: Ch 6 Natural Vegetation and Wild Life Geography Social Studies Our Enviroment
Page No: 45Exercises
1. Answer the following questions.
(i) Which are the two factors on which the growth of vegetation mostly depends?
Answer
Temperature and moisture are the two factors on which the growth of vegetation mostly depends.
(ii) Which are the three broad categories of natural vegetation?
Answer
Three broad categories of natural vegetation are:
(i) Forests
(ii) Grasslands
(iii) Shrubs
(iii) Name the two hardwood trees commonly found in tropical evergreen forest.
Answer
Two hardwood trees commonly found in tropical evergreen forest are:
(i) Rosewood
(ii) Ebony
(iv) In which part of the world are tropical deciduous forest found?
Answer
Tropical deciduous forest are found in the large part of India,northern Australia and in central America.
(v) In which climatic conditions are citrus fruits cultivated?
Answer
Citrus fruits cultivated in the regions where climatic conditions is hot dry summers and mild rainy winters.
(vi) Mention the uses of coniferous forest.
Answer
Uses of coniferous forest:
(i) Making pulp for manufacturing of paper and newsprint.
(ii) Match boxes and packing boxes are also made from softwood trees.
(iii) Chir, pine, cedar are economically important variety of trees.
(vii) In which part of the world is seasonal grassland found?
Answer
Seasonal grassland found is found in the mid latitudinal zones and in the interior part of the continents.
2. Tick the correct answer.
(i) Mosses and Lichens are found in:
(a) Desertic Vegetation
(b) Tropical evergreen forest
(c) Tundra vegetation
✓ (c) Tundra vegetation
(ii) Thorny bushes are found in:
(a) Hot and humid tropical climate
(b) Hot and dry desertic climate
(c) Cold polar climate
✓ (b) Hot and dry desertic climat
(iii) In tropical evergreen forest, one of the common animals is:
(a) Monkey (b) Girraffe (c) Camel
✓ (a) Monkey
(iv) One important variety of coniferous forest is:
(a) Rosewood (b) Pine (c) Teak
✓ (b) Pine
(v) Steppe grassland is found in
(a) S. Africa (b) Australia (c) Central Asia
✓ (c) Central Asia
3. Match the following.
| (i) Walrus | (a) Soft wood tree |
| (ii) Cedar | (b) An animal of tropical deciduous forest |
| (iii) Olives | (c) A polar animal |
| (iv) Elephants | (d) Temperate grassland in Australia |
| (v) Campos | (e) Thorny shrubs |
| (vi) Downs | (f) A citrus fruit |
| - | (g) Tropical grassland of Brazil |
Answer
| (i) Walrus | (c) A polar animal |
| (ii) Cedar | (a) Soft wood tree |
| (iii) Olives | (f) A citrus fruit |
| (iv) Elephants | (b) An animal of tropical deciduous forest |
| (v) Campos | (g) Tropical grassland of Brazil |
| (vi) Downs | (d) Temperate grassland in Australia |
4. 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.
Answer
(i) The animals in polar region have thick fur and thick skin to protect themselves from the cold climatic conditions.
(ii) Tropical deciduous trees shed their leaves in the dry season to survive harsh weather conditions and save water.
(iii) The type and thickness of vegetation changes from place to place due to variation in temperature, altitude, thickness of soil and rainfall at different places.
Notes of Chapter 6 Natural Vegetation and Wild Life
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