Answer :

series  
 current same to all resistors
 p.d  is divided to each resistors depending on their resistivity 
V = IR  the resistor which have more resistance (also resistivity) gain more p.d

parallel
 p.d  is same to all components
 current is divided to each resistor depending on their resistivity
  I = V/R  more current flows through one with less resistance (also resistivity)

here as it is series connection,current is same to all resistors irrespective of their resistance