NCERT Solutions Class 7 Social Science (Geography)
The NCERT Solutions in English Language for Class 7 Social Science (Geography – Our Environment) Chapter – 6 (Natural Vegetation and Wildlife) has been provided here to help the students in solving the questions from this exercise.
Chapter – 6 (Natural Vegetation and Wildlife)
Exercises
1. Answer the following questions.
(i) Which are the two factors on which the growth of vegetation mostly depends?
Answer – The growth of vegetation depends on two factors – temperature and moisture.
(ii) Which are the three broad categories of natural vegetation?
Answer – natural vegetation is divided into three categories :-
1. Forests – where rainfall and temperature are plentiful for plant growth.
2. Grasslands – plants that grow in regions of moderate rainfall.
3. Shrubs – plants that grow in dry regions.
(iii) Name the two hardwood trees commonly found in tropical evergreen forest.
Answer – Two hardwood trees commonly found in tropical evergreen forests are rosewood and mahogany.
(iv) In which part of the world are tropical deciduous forests found?
Answer – Tropical deciduous forests are found in a large part of India, northern Australia, and Central America.
(v) In which climatic conditions are citrus fruits cultivated?
Answer – Citrus fruits are cultivated in the regions marked for hot dry summers and mild rainy winters.
(vi) Mention the uses of coniferous forest.
Answer – The softwood evergreen trees that grow in the coniferous forests are used for making matchboxes and packing boxes. They are also used for making pulp, which is used to manufacture paper and newsprint.
(vii) In which part of the world is seasonal grassland found?
Answer – Seasonal grasslands can be found in the mid latitudinal zone and in the interior parts of the continent.
2. Tick the correct answer.
(i) Mosses and Lichens are found in:
(a) Desert Vegetation
(b) Tropical evergreen forest
(c) Tundra vegetation
Answer – (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
Answer – (b) Hot and dry desert climate
(iii) In tropical evergreen forest, one of the common animals is:
(a) Monkey
(b) Giraffe
(c) Camel
Answer – (a) Monkey
(iv) One important variety of coniferous forest is:
(a) Rosewood
(b) Pine
(c) Teak
Answer – (b) Pine
(v) Steppe grassland is found in
(a) S. Africa
(b) Australia
(c) Central Asia
Answer – (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.
Answer – 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.
Answer – Tropical deciduous trees shed their leaves in the dry season to conserve water.
(iii) The type and thickness of vegetation changes from place to place.
Answer – The type and thickness of vegetation changes from place to place because of the variation in temperature and moisture.
