No, seedless vascular plants do not produce pollen.
Seedless vascular plants, such as ferns, horsetails, and clubmosses, reproduce using spores instead of seeds. These plants have a distinct life cycle that includes a multicellular haploid stage called the gametophyte. In this stage, the gametophyte produces gametes—sperm and eggs—via mitosis. The sperm requires water to swim to the egg for fertilization, leading to the development of a new sporophyte.
On the other hand, pollen is a male gametophyte associated primarily with seed-producing plants (gymnosperms and angiosperms). Pollen grains are adapted for fertilization without the need for water as a medium for sperm movement, which is a significant evolutionary advancement in plant reproduction.
In summary, while seedless vascular plants have a fascinating reproductive system that relies solely on spores rather than pollen, they do not possess the structures necessary for producing pollen grains.