Very clever! That must've taken a while to find two different apples to match up, and then matching them up perfectly. The lighting is pretty clever too, the darker part being on the seam to perhaps to hide any inconsitencies. Nice job!
Very nice job with the bisection! This would maybe have better impact if it didn't appear to be floating in midair and had some sort of contextual background with it. Light is good, focus good, idea very good - just needs a bit more to the composition for a really high score, methinks. Then again, I'm often wrong. :)
I like the idea of this photo, but the outside edge of the image seems too artificial as if the entire background was removed. In addition, the lighting on the red portion of the apple is better (more contrast) than that on the green side.