esmesos
Perhaps. There are water plants however that have roots, stems, and leaves.
Yes, many seed plants do have roots and stems. However, they do not have them initially, but they do grow them eventually.
from roots
Seed plants have both roots and stems. Roots anchor the plant in the ground and absorb water and nutrients, while stems support the plant and transport water and nutrients between roots and leaves.
A rhyme for small parts of wild plants could be "buds and shoots, stems and roots."
Roots, stems and leaf
from the roots of the plants
Desert
Examples of plants that have roots, stems, and leaves but do not produce seeds are flowers. Flowers have roots, stems, and leaves; and reproduce by pollination with the help of bees, and other insects.
Muskrats eat what plants are available in their habitat, including cattail roots, lily roots and stems. When plants aren't available they will eat whatever is available, whether it be fish or small animals.
stems roots and leaves
Plants that lack true stems, roots, and leaves are called thallophytes. These plants have a simple structure without distinct organs like stems and leaves. Examples include algae and fungi.