. A manual of elementary zoology . Zoology. THE ANIMAL IN THE WORLD 535 Here must also be mentioned some special kinds of metabolism which Soec differ greatly, though not in principle, from the pro- Metabolisms cesses we have just traced. Certain organisms, such as the yeast fungus and many bacteria, are able to live without free oxygen, although they contain no chlorophyll to enable. Fig. 392. —Euglena viridis. At A\ A", Three positions of the body. them to obtain it by the splitting of carbon dioxide. Such organisms are called anaerobic. They obtain their energy by the decomposition of
. A manual of elementary zoology . Zoology. THE ANIMAL IN THE WORLD 535 Here must also be mentioned some special kinds of metabolism which Soec differ greatly, though not in principle, from the pro- Metabolisms cesses we have just traced. Certain organisms, such as the yeast fungus and many bacteria, are able to live without free oxygen, although they contain no chlorophyll to enable. Fig. 392. —Euglena viridis. At A\ A", Three positions of the body. them to obtain it by the splitting of carbon dioxide. Such organisms are called anaerobic. They obtain their energy by the decomposition of oxygen-bearing molecules of organic substances, as we have seen some parasitic animals to do (p. 309). Thus the minute fungi. 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 Borradaile, L. A. (Lancelot Alexander), 1872-1945. London : H. Frowde, Hodder & Stoughton
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