Q.

Which of the following is not a reflex action

1 Knee jerk  
2 Boxing  
3 Coughing  
4 Eye lid closing  

Ans.

(2)

Reflex action is an automatic (involuntary) neuromuscular activity triggered by specific stimuli. Knee jerk, coughing and eyelid closing are reflex actions. Boxing is not a reflex action.