Might be a daft question, but does it? I mean a new site, with no links etc, advertising on adwords? I would think and hope no, but anyone with an idea?
I prefer to really control how Google finds a site ie if it is a design company I like google to either find it through a 301 redirect from an old domain etc or if it is totally new a site or forum 'related' to the site's theme. Just a habit, I certainly dont submit my site directly.
But a client I have has the site on adwords already. Will Organic Google come to visit?
Certainly Google will spider the ad's landing page to determine its Quality Score. And since Big Daddy, all of Google's spider share the same cache. In addition, Google grabs urls from all kinds of sources for url discovery.
I've never done the experiment so I can't say for sure. But if you want those urls not to be indexed at all for organic search, I'd suggest taking proactive steps in robots.txt and/or robots meta tags.