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Showing posts with the label #NCERT #Platyhelminthes

ANIMAL KINGDOM Part-10, NCERT Class-11

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Phylum – Platyhelminthes • Dorso - ventrally   flattened   body structure(thats why it is called Flatworms ) • Mostly Endoparasitic • Bilaterally   symmetrical , Triploblastic , Acoelomate • Flatworms show Body - Level   of   Organisation . • In Parasitic form, Hooks   and Suckers   are present • Flame   Cells   help in Osmoregulation   and Excretion . • Hermaphrodite • Flatworm named Planeria   show high regenaration capacity. • Internal   fertilization. • Development through many larval stages. Example: •  Taenia (Tapeworm) •  Fasciola (Liver fluke)