1 Tuberculous pleuritis may occur in some people who have the lung disease from tuberculosis.  The pleural disease occurs from the rupture of a diseased area into the pleural space, the space between the lung and the lining of the chest and abdominal cavities.
The root apical meristem is a region of growth tissue near the tip of each root. The meristematic cells in this region grow in two directions, both backward toward the above-ground shoot and forward toward the tip of the root.
A: Apical dominance is a phenomenon in which the growth of the top shoot impedes the growth of other lower shoots. This inhibition of the growth of the lower shoots is caused by a plant hormone called auxin. The top shoot or bud, which is called the apical meristem, contains the greatest amount of auxin.