Animal Studies: A Text-book of Elementary Zoology for Use in High Schools and CollegesD. Appleton and Company, 1908 - 459 páginas |
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Palavras e frases frequentes
alimentary canal Animalcule annelids appendages arisen among various ARTHROPODS bearing a mouth body borne numerous clumps branching gastric cavity capture the food cavity extending throughout cilia clams clumps of repro colonial jelly-fish Physalia colony is fitted connecting root system conspicuous jelly-fishes crayfishes Crustacea defensive polyp delicate vegetable growth develop digested and distributed digesting it distributes division of labor earthworm esophagus flagellum flatworms free extremi gastric cavity extending gills greater number hermit crabs hermit crabs Fig higher Hydrozoa hollow branching root Hydra hydroid hydroid found investing Hydrozoa individuals like mouthless insects jelly-fishes are included jelly-fishes which bear larvæ loaded with nettle-cells mollusks mouthless jelly-fishes multitude of Hydra-like nettle-cells nettle-cells that enable nutritive polyp of-war Fig parasitic Peripatus Protozoa resemble a Hydra resembling great stream Scyphozoa segments shells of sea-snails simple tube bearing snails sponge supplied with nettle-cells surface suspended individ tacles tentacles third type produces thorax uals resembling usually worms