1. Answer the following questions.
(i) Which are the two factors on which the growth of vegetation mostly depends?
Ans. Two factors on which the growth of vegetation depend are : (i) temperature and (ii) moisture.
(ii) Which are the three broad categories of natural vegetation?
Ans. They are :-
- Thorny shrubs and scrubs
(iii) Name the two hardwood trees commonly found in tropical evergreen forest.
Ans. (i) Rosewood and (ii) Ebony.
(iv) In which part of the world are tropical deciduous forest found?
Ans. Deciduous forests are found in the large part of India, northern Australia and in central America.
(v) In which climatic conditions are citrus fruits cultivated?
Ans. Climatic conditions for cultivation of citrus fruits are :
(i) Hot dry summers (ii) Rainy mild winters.
(vi) Mention the uses of coniferous forest.
Ans. Woods from coniferous forest are used for making :-
- pulp, which is useful for making paper, newsprint and card board
- decorative pieces
- packing box
- particle board and plywood
(vii) In which part of the world is seasonal grassland found?
Ans. Seasonal grassland are found in the mid-latitudinal zones and in the interior parts 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
(ii) Thorny bushes are found in:
(a) Hot and humid tropical climate
(b) Hot and dry desertic 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
3. Match the following.
A polar animal
Soft wood tree
A citrus fruit
An animals tropical deciduous forest
Tropical grassland of Brazil
Temperate grassland in Australia
4. Give reasons.
(i) The animals in polar region have thick fur and thick skin.
Ans. It is to protect themselves from the cold climatic conditions.
(ii) Tropical deciduous trees shed their leaves in the dry season.
Ans. 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.
Ans. The type and thickness of vegetation changes from place to place, because of the variation in temperature, moisture, slop and thickness of soil.