For bryophytes (mosses, liverworts etc.) and seedless vascular plants (ferns), the specific organ that produces the spores on the sporophyte is called the For bryophytes (mosses, liverworts etc.) and seedless vascular plants (ferns), the specific organ that produces the spores on the sporophyte is called the A. Antheridium B. Sporangium C. Aonium D. Sporophyll E. Peristome

A sporangium is a structure in certain plants and other organisms that is charged with making and storing spores
Spores are haploid structures created in organisms that help to germinate and form new organisms
Typically, the plants which develop two types of gametophyte do so within separate microsporangia and megasporangia, these produce microspores and megaspores, which are functionally equivalent to the male (micro) and female (mega) gametes
The term used to describe this trait is heterosporous, and it applies to some bryophytes (non-vascular plants, including liverworts, hornworts and mosses), some lycophytes, a few pteridophytes (ferns)
On the other hand, most bryophytes are homosporous which means they produce only one type of spore within the sporangia, which subsequently develops into a monoecious gametophyte possessing both male and female organs