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class 8 geography chapter 4 natural resources.pdf
- 1. Class – 8 Subject– Geography . Chapter – 4. A. Choose the correct answer and fill in the blanks:- 1. (b) Campos 2. (c) Patagonia 3. (a) Rosewood 4. (d) Australia 5. (a) Mediterranean
- 2. B. Match thecolumns :- 1. Jaguar — USA. 2. Ostrich — Brazil 3. Bison — Botswana 4. Wolf — Russia 5. Wallby — Australia
- 3. C. State whethertrue or false. If false, correct the statement :- 1. False - Plants and animals adapt themselves to their habitat. 2. False – Coniferous forests yield softwood . 3. False – Trees in the temperate deciduous forests. 4. True 5. True
- 4. D. Fill inthe blanks :- 1. Biome 2. Coniferous forest 3. Veld 4. Rhea 5. Tundra
- 5. E. Answer thefollowing questions in 10-20 words :- 1. The groups of plants which have developed in an area without human interference, are called natural vegetation. 2. These forests are well grown in the areas near the equator and close to the tropics. Mainly they are found in Amazon Basin , Zaire basin, Vietnam, Indonesia, etc. 3. Coniferous forests have tall evergreen trees with valuable softwood and they are ideal for lumbering.
- 6. 4. Difference betweenevergreen and deciduous forest is that the trees in an evergreen forest do not shed their leaves during a particular season whereas the trees in deciduous forest shed their leaves during the dry season. 5. A number of species have become endangered and some have already become extinct. Large scale deforestation has robbed the wildlife of their natrul habitat. This has also led to an dwindling in their numbers .
- 7. F. Answer thefollowing questions in 50-70 words :- 1. These are found in the northern hemisphere between 50 degree to 70 degree N latitude specially in Southern Canada , Russia , and Sweden. Pine, fir, spruce, larch, cedar are the types of trees found here.
- 8. 2. Tropical grasslands:- Areas – These grasslands are found in Africa, Brazilian highlands, nothern Australia. Natural vegetation :- Tall and thick scattered trees are the main vegetation of these grasslands Temperate grasslands :- Areas – These grasslands are found in interiors of continents in the mid –latitudes. Natrul vegetation –These areas lack in y’all trees. But, they have healthy, green and nutritious grass in fact, they can be termed as the sea of grass.
- 9. 3. Desert vegetationis also known as xerophytes , that means the vegetation and adapt themselves to the hot and dry climate. Thorny bushes , Cacti, date Palm, etc. are the main shrubs of these regions. 4. Forest are an important natural resource. They are useful to us in number of ways :- They provide us with timber and a host of other products like lac, resins, gums, medicinal herbs, leaves, honey, etc.
- 10. Forests helps inmaintaining the ecological balance, by absorbing carbon dioxide and releasing oxygen. They cause rainfall and prevent floods and soil erosion. They also provide natural nabitat to various species of wildlife .
- 11. G. Answer thefollowing questions in 80-100 word :- 1. some important measures of the forest conservation are :- Reckless deforestation should be checked. The practice of shifting cultivation among tribal people should be stopped as forests are cleared for cultivation. Forest fires which cause a lot of damage to forests should be prevented.
- 12. Unplanned orunauthorised urban growth should be checked . Forested areas should not be converted into farmlands 2. Following steps are being taken to protect the wildlife:- Several biosphere reserves are established to preserve the genetic diversity of the wild animals.
- 13. National parks,Wildlife sanctuaries are made to protect wildlife. Creeks, lakes and wetlands should be conserved. Animal hunting should be prohibited. To meet this purpose, several laws have passed against the hunting of animals and birds . At regional and community level some awareness programs should be encouraged. Social Forestry and Van Mahotsav are the examples of such awareness programmes .