What type of plant reproduces using spores instead of seeds?

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Spores are used by plants that reproduce without seeds. Ferns are a classic example of seedless vascular plants. They produce spores in little capsules called sporangia that are often grouped on the undersides of their fronds, in structures known as sori. When these spores are released, they can grow into a small, independent gametophyte plant that produces sperm and eggs. Water is typically needed for the sperm to swim to the egg, leading to fertilization and the growth of a new fern sporophyte.

This contrasts with seed plants, which reproduce using seeds that contain an embryo and a nutrient supply protected by tissue. Among the options, the fern stands out as the example of a plant that uses spores rather than seeds. (Moss also uses spores, but the fern is the clearest illustration of a vascular, spore-reproducing plant.)