121. Which of the following factors caused the recent depletion of rain in Indonesia ?

1. 1. Growth of forest based industries

   
   
   

   2. Encroachment by urban areas

   
   
   

   3. Forest fire in peat-bogs in marshy areas

   
   
   

   4. Lack of proper management of forests

   
   
   

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   NA

   Correct Option: C

   NA

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122. If a tropical rain forest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because

1. 1. The soil of rain forest is deficient in nutrients

   
   
   

   2. Propagules of the trees in a rain forest have poor viability

   
   
   

   3. The rain forest species are slow-growing

   
   
   

   4. Exotic species invade the fertile soil of rain forest

   
   
   

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   NA

   Correct Option: A

   NA

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123. 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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   NA

   Correct Option: D

   NA

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124. Which of the following leaf modifications occur in the desert areas to inhibit water loss ?
     1. Hard and waxy leaves
     2. Tiny leaves or no leaves
     3. Drip-tip leaves
     4. Thorns instead of leaves
     Select the correct answer using the codes given below

1. 1. 1, 2 and 4

   
   
   

   2. 2 and 3

   
   
   

   3. 1, 2 and 4

   
   
   

   4. 1 and 4

   
   
   

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   NA

   Correct Option: C

   NA

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125. Mid-latitude deciduous forests shed their leaves mainly because

1. 1. Cold winter conditions prevent tree growth

   
   
   

   2. Warm dry summer prevents tree growth

   
   
   

   3. Strong winds blow away all the leaves

   
   
   

   4. Trees are attacked by pests during rainy season

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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