Usually by producing spores. Very simple plants may reproduce just by cell division.
Yes
seedles and non seedless
These plants belong to a group called "pteridophytes." Pteridophytes are non-flowering vascular plants that reproduce using spores. They have specialized tissues for conducting water and nutrients throughout the plant body.
Horsetail is a seedless vascular plant. These plants produce one type of spores only.
Not all vascular plants have seeds. Some plants (like club mosses) are vascular and produce spores. For example the phylum Lycophyta are club mosses and quill-worts. these plants produce spores but still have vascular roots, stems, and one vascular vein in each leaf.
seedles and non seedless
All vascular plants do not bear seeds. For example plants belonging to Pteridophyta are seedless and those of Gymnosperms and Angiosperms bear seeds.
G
mosses are non-vascular plants and ferns are vascular seedless plants
mosses are non-vascular plants and ferns are vascular seedless plants
Ferns are the most commonly known seedless vascular plant, while there are also horsetails and club mosses. Liverworts are not seedless vascular plants -- they are actually nonvascular.
The four main groups of plants are mosses, ferns, gymnosperms, and angiosperms. Mosses are non-vascular plants, ferns are seedless vascular plants, gymnosperms have naked seeds (like pine trees), and angiosperms have seeds enclosed in fruits (flowering plants).