As a general rule for interview questions; be honest, be yourself, and do your best to answer the questions. A big part of interviews is getting a feel for how you respond to questions, as much as it is your answers to those questions. I could give you a better answer if I knew what question in particular you are thinking of. However, for the general case, let your interviewer know that you don't have industry experience, but then go on to answer the question to the best of your ability - and be sure to let them know why you think that way.
Also, don't hesitate to use experiences at school, on personal projects, or at other jobs (outside industry) to answer questions like these. Your experience working on a group project at school for example might be just as valuable to the interviewer as industry experience, at least for determining things like how you work with others, are you a leader or a loyal follower, do you take instruction well, and do you learn from you experiences.
Hope that helps at least a little bit.