116. Which of the following is essential for photosynthesis

1. 1. Carbon dioxide

   
   
   

   2. Chlorophyll

   
   
   

   3. Sun light

   
   
   

   4. All of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: D

   N/A

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117. Thigmotropism is best exhibited by

1. 1. Lamina

   
   
   

   2. Tendrils

   
   
   

   3. Root apex

   
   
   

   4. Thorn

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

   N/A

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118. Absorption of water by root occurs in the region of

1. 1. Root cap

   
   
   

   2. Cell elongation

   
   
   

   3. Root hairs

   
   
   

   4. Cell division

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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119. A Cell increases in volume if the external medium is

1. 1. hypotonic

   
   
   

   2. Hypertonic

   
   
   

   3. Isotonic

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: A

   N/A

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120. Seeds swell when it is placed in water due to

1. 1. Diffusion

   
   
   

   2. Osmosis

   
   
   

   3. Imbibition

   
   
   

   4. Plasmolysis

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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