Colleges spend months creating their applications. They compose the essay questions and arrange the information until the admissions committee has an application that will provide them the information they want, in exactly the way they want it presented.
So how do you think an admissions officer reacts when in response to a question that asks you to list your activities in the space provided, an applicant simply writes, "See attached resume."?
There are lots of better ways to approach the application process. There are better ways to get organized and to put together the information for the people writing your letters of recommendation. There are better ways to choose the colleges to which you will apply, to write your essays and to conduct yourself in your college interviews. It's worth considering all of them.
But never do anything that ignores or contradicts the directions on the application. No matter how unique you think your situation may be, no matter how much more compelling you think your candidacy would be, if you'd be ignoring their directions, don't do it. Colleges would prefer you do it their way.