. Botany; principles and problems. Botany. ^M. Fig. 154.—Desmids of various tyj send out projections or "conjugating tubes" toward one another. The tips of these touch, the wall between them breaks down, and through the channel thus formed the whole protoplasmic con- tents of one cell enters the other and the living portions of the two cells fuse into a thick-walled zygospore. Occasionally the two cells conjugate in the tube itself, and sometimes two adjacent cells of the same filament may unite. The Desmids (Fig. 154) are unicellular plants of the utmost variety and beauty of form.
. Botany; principles and problems. Botany. ^M. Fig. 154.—Desmids of various tyj send out projections or "conjugating tubes" toward one another. The tips of these touch, the wall between them breaks down, and through the channel thus formed the whole protoplasmic con- tents of one cell enters the other and the living portions of the two cells fuse into a thick-walled zygospore. Occasionally the two cells conjugate in the tube itself, and sometimes two adjacent cells of the same filament may unite. The Desmids (Fig. 154) are unicellular plants of the utmost variety and beauty of form. The cell is composed of two per- fectly symmetrical halves separated by a zone, the istJmius, which is often constricted and under which lies the nucleus. Aside. 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 Sinnott, Edmund Ware, 1888-. New York, McGraw-Hill
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbotany, bookyear1923
