So did one of Jan's brothers. All gametophytes are haploid. Tendrils are modified leaves. Huntington's disease is a reces-sively inherited disorder. Pericycle is the outermost layer of the stele in the plant root.
Primary growth results primarily from activity of the lateral meristems.
Sieve cells have a fully functional protoplast with an active nucleus. Secondary wall is always located closer to the plasma membrane of a plant cell than the primary wall. Root hairs are the smallest type of roots complete with a functional stele. The boundary between the cortex and the stele is called endodermis. Branching in roots originates from meristem activity of surface buds much like branching in stems.