156. Which one of the following statements is false

1. 1. Photosynthesis occur in presence of sunlight

   
   
   

   2. CO₂is used during photosynthesis

   
   
   

   3. O₂ is used during photosynthesis

   
   
   

   4. O₂ comes out during photosynthesis

   
   
   

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   N/A

   Correct Option: C

   N/A

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157. Leaf of Mimosa droops down on touching because of

1. 1. Water loss from leaflet base

   
   
   

   2. Change in water concentration

   
   
   

   3. Loss of water from cell to intercellular space in paulvinus and pulvinules

   
   
   

   4. All of above

   
   
   

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   N/A

   Correct Option: C

   N/A

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158. Food products are kept in cold storage or refrigeration in order to

1. 1. Make them tasty

   
   
   

   2. Use in off season

   
   
   

   3. maintenance of freshness, longevity and teste due

   
   
   

   4. Keep them cool

   
   
   

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   N/A

   Correct Option: C

   N/A

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159. Growth rate of plant when plolted on the paper against time then "S" shaped curve is obtained, it is called

1. 1. Sigmoid curve

   
   
   

   2. Respiration curve

   
   
   

   3. Excretion curve

   
   
   

   4. Osmotic curve

   
   
   

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   N/A

   Correct Option: A

   N/A

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160. A twing kept in water having some salt remain fresh for longer period due to

1. 1. Decrease in bacterial degradation

   
   
   

   2. Exosmosis

   
   
   

   3. Decrease in transpiration rate

   
   
   

   4. Absorption of more water

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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