. Adventures with animals and plants. Biology. Fig. 82 An eartbwun/i burrowing in the soil. It looks shiny because its skin is moist. (Schnei- der AND SCHWAiaz). Fic. 83 you see ( AMEUIC: I'Lviiiria is less one inch long. Do the exiling lube 'vehich it can extend? AN MUSEUM or NAI UKAE HISTORY) The L'tv'mg Things of the Earth unit i PHYLUM - PLATYHELAIINTHS F la fd: 011ns Tapeworms and their relatives. The phity helminths (pla-tee-hel'minths) in- chide the tapeworms and the hver flukes, both of whicli are parasites. Tapeworms are flat like a ribbon, but it is a ribbon made up of separa
. Adventures with animals and plants. Biology. Fig. 82 An eartbwun/i burrowing in the soil. It looks shiny because its skin is moist. (Schnei- der AND SCHWAiaz). Fic. 83 you see ( AMEUIC: I'Lviiiria is less one inch long. Do the exiling lube 'vehich it can extend? AN MUSEUM or NAI UKAE HISTORY) The L'tv'mg Things of the Earth unit i PHYLUM - PLATYHELAIINTHS F la fd: 011ns Tapeworms and their relatives. The phity helminths (pla-tee-hel'minths) in- chide the tapeworms and the hver flukes, both of whicli are parasites. Tapeworms are flat like a ribbon, but it is a ribbon made up of separate pieces which can be dropped off one by one. Tapeworms may reach a IcnjTth of twenty feet. Some species live in man's intestines, hooked to the wall bv the curved spikes and suckers on their heads. Thev live on the food which man has dii^ested. You will read more about tapeworms later. Other flatworms that are of great im- portance to man because they attack him or his domesticated animals are the liver flukes. They are tiny worms that live in the liver of sheep and other animals. They do great damage. One very com- mon flatworm, Planaria (plan-air'ree-a), lives in sluggish streams, hidden under stones. Examine Figure 83. Although Planaria is of no economic importance, it has been studied and experimented with by many zoologists. PHYLUM - COELENTERATES Aii'nnah Whose Bodies Are S'niiple Sacs Sea anemones. The coelenterates (see- len'ter-ates) are of great interest to zo- ologists but most of them are of little economic importance. If you sec jraily waving tentacles above a delicately tinted body fastened to the sea bottom \on are looking at a sea anemone (a-ncm'o-nce), the "flower" of the ocean. Man\' are blow 11 in color; some forms arc pini«; or rose-colored; others are oranoc or bluish. 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
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Keywords: ., bookcentury1900, bookpublisherbostondcheath, booksubjectbiology
