Which of these is a non-flowering plant?
There are two main groups of non-flowering plants. Plants that use spores to reproduce and plants that use seeds to reproduce. The non-flowering plants that use seeds are called gymnosperms. Gymnosperm means "naked seeds". They are called this because their seeds are open to the air with no covering such as the seeds of flowering plants. One of the major groups of gymnosperm plants is the conifer. Fern is a spore producing plant. Ferns produce spore casings on the underside of their leaves. These look like brown spots. At some point the casings dry out and the spores are released into the air.