:There seems to be some more confusion here.  The point wasn't to leave open the possibility of ambiguity, but rather to write an accurate plot section.  Saying, Wikus is shown in a scrapyard isn't supported by the scene, and the only thing we have tying the two together is the flower.  As an audience, we can certainly conclude with some certainty that this is Wikus, but we aren't given that exact information.  If you need help with how to write plot sections, please consult the films project.