. Ameboid movement. Amoeboid movement; Amoeba. 14 AMEBOID MOVEMENT. Figure 2. Endoplasmic streaming involved in the formation of a typical food cup. a, the ameba is shown moving toward a live food organism that is resting quietly on the bottom, b, the main pseudopod forks, being the first indication that the feeding process has set in. At c the pseudo- pods have half-way surrounded the prey, but without having come into contact with it. At d the upper sheet of protoplasm, /, (stippled), is flowing dome-like over the prey, while the pseudopods continue to sur- round it. At e the pseudopods have
. Ameboid movement. Amoeboid movement; Amoeba. 14 AMEBOID MOVEMENT. Figure 2. Endoplasmic streaming involved in the formation of a typical food cup. a, the ameba is shown moving toward a live food organism that is resting quietly on the bottom, b, the main pseudopod forks, being the first indication that the feeding process has set in. At c the pseudo- pods have half-way surrounded the prey, but without having come into contact with it. At d the upper sheet of protoplasm, /, (stippled), is flowing dome-like over the prey, while the pseudopods continue to sur- round it. At e the pseudopods have met and fused with each other and the upper sheet of protoplasm has completely covered the space encircled by the pseudopods, and has fused with the pseudopods. g, sheets of proto- plasm which are thrown out along the lower surface under the prey, to form a floor to the food cup. Up to stage e the ameba has not come into physical contact with the prey, but is just about to do so. With the completion of the floor of the food cup, the process of feeding is com- pleted. of the ameba when the ameba was carefully stimulated by means of very fine clean glass needles. The conclusion is unavoidable therefore that the shape of the food cup and the method of its. 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 Schaeffer, Asa A. (Asa Arthur), b. 1883. Princeton : Princeton University Press
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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherprinc, bookyear1920
