46. The trees of the tropical rain forests and coniferous forests are similar in that

1. 1. They have large broad leaves

   
   
   

   2. Their branches slope downward

   
   
   

   3. They lose their leaves at the same time

   
   
   

   4. They are evergreen

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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47. The most important commercial use of forests is due to its

1. 1. Supply of firewood for cooking

   
   
   

   2. Manufacture of wood pulp and paper

   
   
   

   3. Supply of timber for construction

   
   
   

   4. Manufacture of furniture

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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48. Match List - I (Weathering) with List - II (Affected Morphogenetic Region) and select the correct answer by using the codes given below the lists
    

    	List - I		List - II
    F.	Maximum frost actoin	1.	Humid tropics
    G.	Maximum mechanical weathering	2.	Tropical wet-dry (Savanna)
    H.	Maximum chemical weathering	3.	Arid
    J.	Seasonal maximum chemical Weathering	4.	Periglacial

    Code :

    	F	G	H	J
    A.	4	3	1	2
    B.	1	2	4	3
    C.	4	2	1	3
    D.	1	3	4	2

1. 1. A.

   
   
   

   2. B.

   
   
   

   3. C.

   
   
   

   4. D.

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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49. Which one of the following statements, is not true of coniferous forests ?

1. 1. Spruce is the important tree of this jungle which is used in preparing pulp and artificial silk

   
   
   

   2. They are evergreen forests of soft wood trees with short and pointed leaves

   
   
   

   3. Such jungles are also called 'boreal'

   
   
   

   4. Tree trunks of this region are quite thick and are covered with thick barks so as to protect them from the dryness of the summer season

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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50. Match List -I (Ecosystem) with List -II (Vegetation type) select the correct answer using the codes given below the lists
    

    	List - I		List - II
    F.	Tropical grassland	1.	Selvas
    G.	Temperate forests	2.	Taiga
    H.	Tropical forests	3.	Savanna
    J.	Temperate grassland	4.	Pampas

    Code :

    	F	G	H	J
    A.	3	2	1	4
    B.	1	2	3	4
    C.	4	3	2	1
    D.	2	1	4	3

1. 1. A.

   
   
   

   2. B.

   
   
   

   3. C.

   
   
   

   4. D.

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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