What a load of shit. AQIS would have flagged those seeds at the border and irradiated the shit out of them. I have been on the end of receiving seeds (tomato and tobacco) from the US. Australian Customs/AQIS contacted me, within hours of the package arriving and informed me that I could have the seeds irradiated (at my expense) to kill any possible pathogens and destroying the viability of the seeds or let AQIS keep and 'destroy' them. I let them keep them.
The seeds pictured on the let and right images are clearly citrus of some description, the centre seeds look to be broccoli or cauliflower.