Can you test your iPhone apps on the iPad using the developer tools?

So, stupid question – I’m sorry. Can you connect an iPad to the iPhone/iPod app developer tools and it will behave how the iPad works when running an iPhone app (scaled or tiny in the centre of the screen)?

Presumably if you plan to develop both iPad and iPod apps it would make sense to just get the one device – but I can see Apple claiming that you need to buy both to develop because they love money.