Those look like hermie, male banana sacks and those don't look open. If any on the lower plant were open you might get a few seeds BUT they will be female seeds. If you can pick these male banana pods off and put in a ziplock in the frig for the next grow you can make your own fem seed with them. You can make fem crosses or anything. It comes from some kind of stress to the plant. I have been trying to stress one plant to get these but can't seem to do it. Curse or blessing. IT all depends on a certain point of veiw