Land, Soil, Water, Natural Vegetation and Wildlife Resources (Chapter-2)

Q.14 Describe the factors that influence land use pattern

Q.16 Why is the distribution of water resource uneven in the world ? What are the problems or reasons of water pollution ?

Q.15 What is the importance of soil ? State the factor that govern the formation of soil ?

Q.13 Explain how soil erosion can be prevented.

Q.12 Why is all the water available not fit for human use ?

Q.11 Give some uses of water

Q.10 In what way we can check soil erosion from wind action in a dry region ?

Q.9   List three factors responsible for soil erosion.

Q.8   What is humus and why is it useful for soil ?

Q.7   Name three factors influencing the land use pattern.

Q.6   What is the significance of water for living being on the earth ?

Q.5   Name and explain the methods for the conservation of soil.

Q.4   Name and describe the four distinct horizons of the soil.

Q.3   What do you understand about the ownership of land ?

Q.2   What factors are mainly responsible for the formation of soil?

Q.1   Why does the use of land vary from place to place ?

Give Reason For Following

Q.1   The soils must be conserved for the survival of human beings.

Q.2   Land is the most important natural resources.

Q.3   The greatest danger to natural resources is from human beings.

Q.4   The presence of water makes the earth a unique planet

Choose The Correct Answer

Q.5   Which one is not the basic elements of environment ?

          (A) land                           (B) Water         

          (C) Irrigation

Q.6   The share of land on the surface of the earth is about-

          (A) 29 percent   (B) 39 percent     

          (C) 71 percent

Q.7   Which of the following areas are not sparsely populated ?

          (A) Marshlands (B) River valleys

          (C) Cold deserts

Q.8   Which of the following countries has the largest area (percentage) under the forests ?

          (A) Brazil                        (B) Russia        

          (C) Canada

Q.9   The state of waterbodies on the surface of the earth is about

          (A) 71 percent   (B) 61 percent     

          (C) 29 percent

Q.10 Out of the horizons A, B, C and D of soil, which from the true soil ?

          (A) A and D                    (B) A and C     

          (C) A and B

Q.11 How much percent of the earth's total water is in oceans and seas ?

          (A) 97                (B) 81 

          (C) 79                 (D) 91

Q.12 How many countries are likely to face water scarcity by 2025 ?

          (A) 26                (B) 56 

          (C) 65                 (D) 62

Q.13 In dry regions, soil erosion is checked by

          (A) Shelter belts            

          (B) Strip cropping

          (C) Plugging of gullies 

          (D) Contour plugging

Q.14 Soil formation is controlled by-

          (A) Time                        

          (B) Organism in the soil      

          (C) Neither (A) & (B)          

          (D) Both (A) & (B)

Q.15 What is the percent of fresh water available as ground water ?

          (A) 2.7 %           (B) 3.5 %   

          (C) 1 %              (D) 2 %

Q.16 The consumption of water by human in 1975 was 3850cu km/year, how much it was raised in 2000 ?

          (A) 4850cu km/year      (B) 5000cu km/year

          (C) 5500cu km/year       (D) 6000cu km/year

Fill In The Blanks

Q.1  About 90 percent of world's population occupies about ..................... percent of land surface.

Q.2   The surface of the earth is covered with ..................... percent of water.

Q.3   The distribution of water on the earth is due to the..................... .

Q.4   The rocks from which soils are formed, are called the..................... .

State True Or False

Q.1   The needs of the people depend upon cultural and technological development.

Q.2   The thickly populated areas are grasslands and rainforests.

Q.3   The hydrological cycle maintains the availability of freshwater on the earth's surface.

Q.4   Soil is usually classified as a non-renewable resource.

Learn These Terms

1.  Weathering : The breaking up and decay of exposed rocks by temperature changes, frost action, plants, animals.

2.  Rainwater harvesting : The process of collecting rainwater from rooftops and directing it to an appropriate location and storing if for future use.

3.  Water cycle : The movement of water from oceans to air, land and back to ocean, through the processes of evaporation, condensation, precipitation and run-off.

State whether the given statements are true or false. If true, write the reasons.

(i) Ganga-Brahmaputra plain of India is an overpopulated region.

(ii) Water availability per person in India is declining.

(iii) Rows of trees planted in the coastal areas to check the wind movement is called intercropping.

(iv) Human interference and changes of climate can maintain the ecosystem.

Match the following.

Tick the correct answer.

(i) Which one of the following is nota factor of soil formation?

(ii) Which one of the following methods is most appropriate to check soil erosion on steep slopes?

(iii) Which one of the following is not in favour of the conservation of nature?

Answer the following questions.

(i) Which are the two main climatic factors responsible for soil formation?

(ii) Write any two reasons for land degradation today.

(iii) Why is land considered an important resource?

(iv) Name any two steps that government has taken to conserve plants and animals.

(v) Suggest three ways to conserve water.