Relative amounts and the distributional change of insoluble polysaccharide granules existing in the cells were observed in both root and shoot apical meristems of Phaseolus radiatus Linn, during seed germination. With the exception of the periblera and root cap, no polysaccharide granules were present in the resting embryo axis. They increased gradually and decreased again as the embryo grew. No more polysaccharides were seen except in the columella tip of the root cap in the materials longer than 60 hr after soaking.