This question  was attempted by many candidates and their performance was good.  In part (a) some candidates wrote out of the  context.  They mentioned training  exercise, fatty acid, lactus, inhalation and exhalatiion as end-products of  aerobic respiration instead of carbondioxide (Co2) water (H2O)  and energy.  In part (b), candiates  correctly named components of physical fitness.  
                      However, the  expected answers were as follows:
                      1(a)    End products of aerobic respiration
                      
                        -    Carbondioxide (Co2)
-    Water( H2O)
-    Energy                       
(b)      Components of Physical Fitness
             -     flexibility
             -     speed
             -     agility
             -     power
             -     balance
             -     coordination
             -     strength
             -     endurance/stamina