A. The answer is not really, unless you think the following differences matter -
A student credit card's APR tends to be higher, all things equal. Also, it will be harder for a student credit card holder to get 0% introductory offer.
A student credit card's credit limit is modest, because a student account holder tends to have no to little income to justify a higher credit limit.
A student credit card's approval criteria are more relaxed - as long as the student is over age 18, has no bad credit, has a social security number, a modest income (e.g. a part-time job) and a bank account, the approval should not be a problem.