I was wondering if its possible to plug Guitar amp head into a Bass combo's speaker?

I have a Behringer Ultrabass bx1200, and I can plug out the speaker from the Amp section.
Would the speaker work with, lets say, a Marshall MG series head (or even an MA series) ?

I'm just trying to save money on gear.
it'll probably sound like shit. bass speakers aren't designed to handle the highs that a 6 string guitar can put out. it would be the same idea as playing a bass thru a guitar amp. you can try it but it probably won't sound very good
if you don't want to buy a new cab, then maybe i would suggest purchasing some new speakers somewhere down the line. that will help with the sound quality