Do I need to install flash player using Win 7 Pro and IE11?

Hi,

Could I have a definitive yes/no answer to, "Do I need a flash player plug-in when I am using 64 bit Windows 7 Professional SP1 and IE11?"

I am using IE11 v.11.0.9600.16476

Flash v.12.0.0.38

I am not, as far as I can see, have any problems viewing anything. But Adobe insist I should be using Flash v.12.0.0.43 and they identify my browser as Gecko.

I understand that Gecko is usually identified as Firefox but is it correctly identified as IE?

Windows 8.1 with IE11 states that it is a plug-in less browser; but is Windows 7 with IE11 plug-in less or not...???

Very confusing!

Regards.