. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Figure 3. The innermost region of flagellated cells in the coeloblastulu ot If»u'M</cimi IIIMI. L: Iipid droplet. M: mitochondrion. Scale bar = 1 /xm. Figure 4. Apical region of flagellated cells in the coeloblastula of Leucosolenia Uu<i showing two basal rootlets (R) and a basal foot (F). G: Golgi apparatus, P: protrusion of the outermost portion of flagellated cells. S: simple apposition. Scale bar = 1 /xm. Figure 5. Flagellar basal apparatus of Leiicosoleniu luxa. B: basal body. F: basal foot. G: Golgi apparatus. P:
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Figure 3. The innermost region of flagellated cells in the coeloblastulu ot If»u'M</cimi IIIMI. L: Iipid droplet. M: mitochondrion. Scale bar = 1 /xm. Figure 4. Apical region of flagellated cells in the coeloblastula of Leucosolenia Uu<i showing two basal rootlets (R) and a basal foot (F). G: Golgi apparatus, P: protrusion of the outermost portion of flagellated cells. S: simple apposition. Scale bar = 1 /xm. Figure 5. Flagellar basal apparatus of Leiicosoleniu luxa. B: basal body. F: basal foot. G: Golgi apparatus. P: protrusion of the outermost portion of flagellated cells. R: basal rootlet, S: simple apposition. Scale bar = 1 end of the larva. The Golgi apparatus is always located anteriorly to the rootlet (Fig. 4). These precise spatial ar- rangements seem to be essential for aligning the direction of an effective stroke. Figure 6 shows glutinous granules of about 1-jum diameter in the apical cytoplasm of flagellated cells. Their surface layer is very electron-dense, and the inner part is made of the loose network of a fine granular substance. The name glutinous granules was chosen be- cause they are made of a verj sticky substance. When paraformaldehyde v\;c- omitted from the fixative, some of these granules were discharged from the cell, and their content was released inio ihe water. The released content was found to be glutinous because it adhered to flagella and made them very sticky. The sticky flagella became crooked and tangled with each other in the fixative. Figure 7 shows fibrous granules of about X /im. They are yolk granules filled with a fibrous substance. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, M
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
