Sphenophytes spread via rhizomes, but also produce erect stems. Usually the below ground portion of a plant. Contrast with shoot . A series of whorls of leaves or leaf-like structure produced at the base of the stem, just above the ground. Growth in a plant which does not occur at the tips of the stems or roots.
Secondary growth produces wood and bark in seed plants .
Structure that develops following fertilization of an ovule. The outermost structures of a flower. A partition which divides up a region, such as the septum in your nose. Usually, the above ground portion of a plant, bearing the leaves. Contrast with root .