. Zoology : for students and general readers . Zoology. Dt8TWCTtOKS BETWEEN ANIMALS AND PLANTS. 3 organisms is inorganic particles. The slime-moulds called Myxomycetes, however, envelop the plant or low animals, much as an Amoeha throws itself around some living plant and absorbs its protoplasm ; but Mijxoimjcctes, in their man- ner of taking food, are an exception to other moulds. The lowest animals swallow other living animals whole or in pieces ; certain forms like Amosba (Fig. 3) bore into minute algffl and absorb their pro- toplasm ; others engulf sili- cious-shelled plants (diatoms and d
. Zoology : for students and general readers . Zoology. Dt8TWCTtOKS BETWEEN ANIMALS AND PLANTS. 3 organisms is inorganic particles. The slime-moulds called Myxomycetes, however, envelop the plant or low animals, much as an Amoeha throws itself around some living plant and absorbs its protoplasm ; but Mijxoimjcctes, in their man- ner of taking food, are an exception to other moulds. The lowest animals swallow other living animals whole or in pieces ; certain forms like Amosba (Fig. 3) bore into minute algffl and absorb their pro- toplasm ; others engulf sili- cious-shelled plants (diatoms and desmids) and absorb the protoplasm filling them. No animal swallows silica, lime, or ammonia, or phosphates as food. On the other hand, , a Protozoan. Theiight- ' nana iignre showa three pjieiidopodiann the plants manufacture or pro- right side; in the two otlier figures the -*L . ., ^ pseudopodia are withdrawn in tne body- duce protein m starch, albu- mass. men, sugar, etc., which is animal food. Plants inhale car- bonic acid gas and exhale oxygen; animals inhale oxygen and exhale carbonic acid ; though Draper has discovered that, under certain circumstances, plants may exhale car- bonic acid. Animals move and have special organs of locomotion ; few plants move, though some climb, and minute forms have thread-like processes or vibratile lashes (cilia) resem- bling the flagella of monads, and flowers open and shut, but these motions of the higher plants are purely mechanical, and not performed by special organs controlled by nerves. The mode of reproduction of plants and animals, however, is fundamentally identical, and in this respect the two king- doms unite more closely than in any other. Plants also, like animals, are formed of cells, the latter in the higher forms combined into tissues. As the lowest plants and animals are scarcely distinguish- able, it is probable that plants and animals first appeared contemporaneously ; and while plants are generally said t
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1879
