46. 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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47. 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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48. Osmosis is defined as

1. 1. Flow of solvent (water) through a semipermeable Membrane from less concentrated solution to more concentrated solution

   
   
   

   2. Flow of solute from a semipermeable membrane

   
   
   

   3. Flow of water without a membrane

   
   
   

   4. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: A

   N/A

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49. Osmosis Involves

1. 1. Diffusion of suspended particle from higher to lower concentration

   
   
   

   2. Diffusion of suspended particle from lower to higher concentration

   
   
   

   3. Diffusion of water from more to less concentrated side

   
   
   

   4. Diffusion of water from less to more concentrated side

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: D

   N/A

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50. Transpiration differ from evaporation in

1. 1. Rate of water loss

   
   
   

   2. Transpiration is a physiological process while evaporation is physical process

   
   
   

   3. Transpiration is physical process while evaporation is a physiological process

   
   
   

   4. Frequency of water loss

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

   N/A

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