Study the given set up of an experiment. You will observe that
  
 
ALime water in test tube B turns milky
BLime water in test tube C turns milky
CPotassium hydroxide solution in test tube A turns red
DTemperature in the flask will go down.
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Class : Class 7 
                                                                                                
                                                                                                the potassium hydroxide in tube A will absorb the carbon dioxide. thus tube B will not get any CO2 and lime water will not turn milky. however germinating seeds will utilize oxygen from the air and will release CO2 (respiration) so test tube C will get CO2 and lime water in tube C will turn  milky
                                                                                            
                                                                                             
             
             
        