41. Resins placed in water swell up due to

1. 1. Plasmolysis

   
   
   

   2. Adsorption

   
   
   

   3. Diffusion

   
   
   

   4. Endosmosis

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: D

   N/A

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42. If the stem grows toward sunlight, and root grow just opposite to it, stem movement is called

1. 1. negative phototrophic movement

   
   
   

   2. Phototrophic movement

   
   
   

   3. Positive phototrophic movement

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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43. Which one of the following statements is/are correct about harmone

1. 1. It is a organic compound which control the growth of plant

   
   
   

   2. It is a special kind of organic compound found in small amount which control metabolic activity and growth of plant

   
   
   

   3. It is different concentration have different effect on different organ

   
   
   

   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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44. Root hair absorb water from soil when

1. 1. Osmotic concentration is same in the two

   
   
   

   2. Solute concentration is higher in soil solution

   
   
   

   3. Solute concentration is higher in root hair

   
   
   

   4. Absorpton is active

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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45. Which of the following statements is/are correct regarding auxin

1. 1. It inhibits the following of leaf

   
   
   

   2. It destroy weeds

   
   
   

   3. It permote apical grouth

   
   
   

   4. All of above

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: D

   N/A

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