Chapter : 4. Diversity In Living Organism
Phylum - Platyhelminthes
Phylum - Platyhelminthes :
Bilaterally symmetrical and dorsoventrally flattended animals.
Body thin, soft, leaf-like or ribbon-like.
Digestive cavity (when present) with a single opening, the mouth (anus is absent).
Suckers and hooks are usually present.
Circulatory and respiratory system and skeleton are absent.
Excretory system consists of blind tubules called protonephridia.
Examples : Dugesia (Planaria), Fasciola (liver fluke), Schistosoma (Blood fluke), Taenia solium (Pork Tape worm).
Bilaterally symmetrical and dorsoventrally flattended animals.
Body thin, soft, leaf-like or ribbon-like.
Digestive cavity (when present) with a single opening, the mouth (anus is absent).
Suckers and hooks are usually present.
Circulatory and respiratory system and skeleton are absent.
Excretory system consists of blind tubules called protonephridia.
Examples : Dugesia (Planaria), Fasciola (liver fluke), Schistosoma (Blood fluke), Taenia solium (Pork Tape worm).
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