About the Plant Kingdom

The Plant Kingdom is a way to classify (or organize) plants. They are divided into groups based on the traits they have in common.
Scientists change the way plants are classified from time to time,
when they discover new types of plants or learn new things about
plants.
      The two main groups are vascular plants (plants that use stems and veins to transport food and water), and non-vascular plants (plants with no roots, stems, or leaves).
        Vascular plants can divided into smaller groups, one of which is
seed plants. This group includes flowering and non-flowering plants.
Flowering plants include monocots (one seed leaf) and dicots (two
seed leaves). The non-flowering plants can also be divided into
several groups, including cycads, conifers, and ginkgo.