Question

what is meant by reflex action?how they help in our daily life?

Answer 1

The actions which are not under the voluntary control of our brain and are undertaken by the spinal cord are called reflex actions.eg.sneezing,coughing,yawning etc..suppose if we touch a hot plate unknowingly,we will suddenly pull our hand back.we will never decide what to do.so decision was not taken by our brain but a sudden action took place.our spinal cord took action in this case.brain was not involved.

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Answer 2

the action of our body parts without our unknowingly is called reflex action.
this action prevent our body by the some dangerous stimuli such as heat,.
when we touch our hand to hot plate then we remove hand without unknowingly.