Here's a breakdown:

* Bryophytes are non-vascular plants, including mosses, liverworts, and hornworts.

* Sporangium is the structure where spores are produced.

* Meiosis is a type of cell division that reduces the number of chromosomes in a cell by half, creating haploid spores from diploid cells.

So, the sporangium is where the diploid cells undergo meiosis to produce haploid spores, which are then released and dispersed to germinate into new haploid gametophytes.