Class 7 Geography

Natural Vegetation Wildlife

NCERT Solution:

Give Reasons

Question 1: The animals in polar region have thick fur and thick skin.

Answer: Thick fur and thick skin help these animals in fighting the extremely cold climate.

Question 2: Tropical deciduous trees shed their leaves in the dry season.

Answer: Leaves are shed in dry season to conserve water.

Question 3: The type and thickness of vegetation changes from place to place.

Answer: Type and thickness of vegetation depends on temperature and rainfall. Temperature and rainfall vary from place to place. Hence, type and thickness of vegetation changes from place to place.

Match the following

Column IColumn II
(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) c, (ii) a, (iii) f, (iv) b, (v) g, (vi) d

Answer the following questions:

Question 1: Which are the two factors on which the growth of vegetation mostly depends?

Answer: Temperature and moisture

Question 2: Which are the three broad categories of natural vegetation?

Answer: Forests, grasslands and shrubs

Question 3: Name the two hardwood trees commonly found in tropical evergreen forest.

Answer: Rosewood and ebony

Question 4: In which part of the world are tropical deciduous forest found?

Answer: The large part of India, northern Australia and in central America

Question 5: In which climatic conditions are citrus fruits cultivated?

Answer: Hot dry summers and mild rainy winters.

Question 6: Mention the uses of coniferous forest.

Answer: Making paper, matchboxes and packing boxes

Question 7: In which part of the world is seasonal grassland found?

Answer: In the mid latitudinal zones and in the interior part of the continents.

Multiple Choice Questions:

Question 1: Mosses and Lichens are found in:

  1. Desert vegetation
  2. Tropical Evergreen Forest
  3. Tundra vegetation

Answer: (c) Tundra vegetation

Question 2: Thorny bushes are found in:

  1. Hot and humid tropical climate
  2. Hot and dry desert climate
  3. Cold polar climate

Answer: (b) Hot and dry desert climate

Question 3: In tropical evergreen forest, one of the common animals is:

  1. Monkey
  2. Giraffe
  3. Camel

Answer: (a) Monkey

Question 4: One important variety of coniferous forest is:

  1. Rosewood
  2. Pine
  3. Oak

Answer: (b) Pine

Question 5: Steppe grassland is found in

  1. South Africa
  2. Australia
  3. Central Asia

Answer: (c) Central Asia