Hi Salim,This can be done in many ways. You can use the form api to hide/unhide the desired filelds on catching the checked event of the radio button.There are many post related to your issue, you can look at them and come again with more specific questions to have a better answer.
pawan,My req is quite simple, Following are my radio button options will appear when the form (template) will open. So if user selects "Life Insurance" the fields of various life insurance will populate. if user selects Mutual funds, the those fields should populate.