6. Natural Vegetation And Wildlife

6, Natural Vegetation And Wildlife 

 NCERT Solutions for Class 7 Social science Chapter 6 Natural Vegetation And Wildlife.

Questions.1.Answer the following questions.
 
Questions.1.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.
 
Questions.2. Which are the three broad categories of natural vegetation?
Answer.- The three broad categories of natural vegetation are forests, grasslands and shrubs.
 
Questions.3. Name the two hardwood trees commonly found in tropical evergreen forest.
Answer.- Rosewood and ebony are hardwood trees commonly found in tropical evergreen forests.
 
Questions.4. In which part of the world are tropical deciduous forests found?
Answer.- Tropical deciduous forests are monsoon forests found in large parts of India, Northern Australia and Central America.
Questions.5. In which climatic conditions are citrus fruits cultivated?
Answer.- Citrus fruits are cultivated in Mediterranean climate, i.e., regions experiencing hot, dry summers and mild, rainy winters.
 
Questions.6. Mention the uses of coniferous forest.
Answer.- Coniferous forests are home to softwood trees. The woods of these trees are used for making pulp, which is used for manufacturing paper and newsprint. Match boxes and packing boxes are also made from softwood.
 
Questions.7. In which part of the world is seasonal grassland found?
Answer.- Seasonal grasslands or temperate grasslands are found in the mid-latitudinal zones and in the interior parts of continents.
 
 
Questions.2. 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
 
Answer.-
i.-(c) Tundra vegetation
ii.- (b) Hot and dry desert climate
iii.- (a) Monkey
iv.- (b) Pine
v.- (c) Russia
 
Question.3- Match the following,

Answer.-

(i) Walrus	(c) A polar animal
(ii) Cedar	(a) Softwood tree
(iii) Olives	(f) A citrus fruit
(iv) Elephant	(b) An animal of tropical deciduous forest
(v) Campos	(g) Tropical grassland of Brazil
(vi) Downs	(d) Temperate grassland in Australia

 
 
Question.4- Give reasons.
 
(a) The animals in Polar region have thick fur and thick skin.
Answer.- 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.
 
(b) Tropical deciduous trees shed their leaves in the dry season.
Answer.- The tropical deciduous trees are found in regions characterised by seasonal changes. The trees shed their leaves in the dry season to conserve water.
 
(c) The type and thickness of vegetation changes from place to place.
Answer.- 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.

   EXTRA QUESTIONS

Questions.1. Name the animals found, in the coniferous forests.
Answer.-Silver fox, mink, and polar bear.

Questions.2. Name the trees found in the tropical deciduous forests.
Ans. Sal, teak, neem and shisham.

Questions.3. Where are Savannah grasslands found?
Answer.-They are found in East Africa.

Questions.4. Where are shrubs found?
Answer.-Shrubs are found in the dry regions.

Questions.5. Which type of grassland Prairie is?
Answer.-Prairie is temperate grassland.

Questions.6. Name some animals found in polar regions.
Answer.-Seal, walruses, musk-oxen, Arctic owl, polar bear, and snow foxes.