What was it that you were cutting up I'm putting in The Underneath container? You should at least put it on the screen something so I know what you're using you did a great job but you should always share exactly what you're using because if not then we're just guessing and how does that really help us
It depends on if whatever seeds you are taking are from a non sterile plant - some newer species of plants have been modified so that their seeds are sterile. Usually, heritage plants haven't been modified and their seeds will grow just fine. I recommend trying it with something first, keep the seeds moist and you should see sprouting within a week.