Railways General Science & Technology Plant Physiology Sample Paper

done Plant Physiology Sample Test Paper-28 Total Questions - 20    [Download]

• question_answer1)
  The oxygen released during photosynthesis of green plants comes from the breakdown of which one of the following?
  A)
   Carbon dioxide
  done clear
  B)
   Fatty acids
  done clear
  C)
   Carbohydrates
  done clear
  D)
   Water
  done clear
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• question_answer2)
  Which of the following is not performed by root hairs?
  A)
   Water uptake    
  done clear
  B)
   Oxygen uptake
  done clear
  C)
   Mineral uptake
  done clear
  D)
   \[C{{O}_{2}}\] uptake
  done clear
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• question_answer3)
  Which pigment is essential for nitrogen fixation by leguminous plants?
  A)
   Phycocyanin    
  done clear
  B)
   Leghaemoglobin
  done clear
  C)
   Phycoerythrin
  done clear
  D)
   Myoglobin
  done clear
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• question_answer4)
  Which of the following crops would be preferred for sowing in order to enrich the soil with nitrogen?
  A)
   Wheat 
  done clear
  B)
   Mustard
  done clear
  C)
   Sunflower
  done clear
  D)
   Gram
  done clear
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• question_answer5)
  Which of the following is necessary for respiration in plants?
  A)
   Carbon dioxide
  done clear
  B)
          Oxygen
  done clear
  C)
   Chlorophyll
  done clear
  D)
   Light
  done clear
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• question_answer6)
  When dried raisins are put in plain water, they swell up. If put again in brine solution, they shrivel up. This phenomenon indicates the property of
  A)
   Diffusion          
  done clear
  B)
   Perfusion
  done clear
  C)
   Osmosis           
  done clear
  D)
   Fusion
  done clear
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• question_answer7)
  Which of the following is a bacterium involved in denitrification?
  A)
   Nitrococcus      
  done clear
  B)
   Azotobacter
  done clear
  C)
   Pseudomonas
  done clear
  D)
   Nitrosomonas
  done clear
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• question_answer8)
  Which one of the following doesn't help in molecule transport?
  A)
   Diffusion          
  done clear
  B)
   Osmosis
  done clear
  C)
   Surface tension
  done clear
  D)
   Active transport
  done clear
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• question_answer9)
  What is the energy currency of a cell?
  A)
   DNA               
  done clear
  B)
   RNA
  done clear
  C)
   ATP                
  done clear
  D)
   Minerals
  done clear
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• question_answer10)
  Which one among the following Indian scientists proposed a theory for long distance transport of water in plants?
  A)
   JC Bose           
  done clear
  B)
   Birbal Sahni
  done clear
  C)
   P. Maheshwari
  done clear
  D)
          NS Parihar
  done clear
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• question_answer11)
  The response of different organisms to environmental rhythms of light and darkness is called
  A)
   Phototaxis       
  done clear
  B)
   Photoperiodism
  done clear
  C)
   Phototropism    
  done clear
  D)
   Vernalization
  done clear
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• question_answer12)
  Photo synthetically active radiation is represented by the range of wavelength of
  A)
   340-450 nm     
  done clear
  B)
   400-700 nm
  done clear
  C)
   500-600 nm     
  done clear
  D)
   400-950 nm
  done clear
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• question_answer13)
  Which one among the following nutrients is a structural component of the cell wall of plants?
  A)
   Manganese       
  done clear
  B)
   Potassium
  done clear
  C)
   Phosphorus      
  done clear
  D)
   Calcium
  done clear
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• question_answer14)
  Excessive elongation of plant stem is due to
  A)
   Cytokinin         
  done clear
  B)
   GA
  done clear
  C)
   ABA               
  done clear
  D)
   IAA
  done clear
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• question_answer15)
  Maximum amount of energy/ATP is liberated on oxidation of
  A)
   Fats                
  done clear
  B)
   proteins
  done clear
  C)
   Starch 
  done clear
  D)
   vitamins
  done clear
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• question_answer16)
  Which of the following is not a micronutrient for a plant?
  A)
   Iron                 
  done clear
  B)
   Magnesium
  done clear
  C)
   Molybdenum    
  done clear
  D)
   Manganese
  done clear
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• question_answer17)
  In photosynthesis, oxygen comes from
  A)
   \[C{{O}_{2}}\]
  done clear
  B)
   \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\]
  done clear
  C)
   \[{{H}_{2}}O\]           
  done clear
  D)
   chlorophyll
  done clear
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• question_answer18)
  The commonest living, which can respire in the absence of \[{{O}_{2}}\] is
  A)
   Fish                 
  done clear
  B)
   Yeast
  done clear
  C)
   Potato 
  done clear
  D)
   Chlorella
  done clear
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• question_answer19)
  Which one of the following is not an essential element for plants?
  A)
   Potassium        
  done clear
  B)
   Iron
  done clear
  C)
   Iodine  
  done clear
  D)
   Zinc
  done clear
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• question_answer20)
  Plants die from prolonged water-logging because
  A)
   Soil nutrients become very dilute.
  done clear
  B)
   Root respiration stops.
  done clear
  C)
   Cell sap in the plants becomes too dilute.
  done clear
  D)
   Nutrients leach down due to excess water.
  done clear
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