What r the 3 classes of tracheophytes for plants?
1. Ferns were the first tracheophytes to evolve. Ferns are notable because they reproduce through the use of spores and do not use seeds. Gymnosperms 2. Gymnosperms were the first tracheophytes to use seeds for reproduction. The seeds develop in protective structures called cones. A gymnosperm will contain some cones that are female and some that are male. Female cones produce spores that, after fertilization, become eggs enclosed in seeds that fall to the ground. Male cones produce pollen, which is taken by the wind and fertilizes female eggs by that means. Coniferous trees such as pines and firs are good examples of gymnosperms. 3. Angiosperms Angiosperms, the flowering plants, are the most highly evolved plants and the most dominant in present times. Angiosperms, there are actually two kinds: monocots and dicots. Monocots include grasses, grains, and other narrow-leaved angiosperms. Monocots are named for the presence of a single cotyledon (seed leaf) during embryonic development. I
