COURSE I – FIRST SEMESTER PHYLUM PLATYHELMINTHESDorsoventrally flattened, bilaterally symmetrical, triploblastic and acoelomateworms. Prof. S D Rathod
Flame cell Excretion is performed by flame cells Digestive system is incomplete (no anus)
Class – Turbellaria Planarians Free living Sense organs at head region Eversible pharynx High regeneration
Class – Trematoda Oral and ventral suckers Endoparasitic example - Fasciola (Liver-fluke)
Class – Cestoda (class of tape worms) Commonly known as tapeworms since body is long tape like. These have suckers and hooks for attachment. Tapeworms are endoparasitic and live in intestine of various vertebrates. Body is pseudosegmented.
COURSE I – FIRST SEMESTERPHYLUM - ASCHELMINTHESCLASS - NEMATODARound worms, cylindrical, bilaterallysymmetrical, triploblastic, pseudocoelomate.Digestive system complete. Prof. S D Rathod
Ascaris Ectoderm is syncytial. Sexes are separate Females are larger than males and are straight. Males are small and curved at posterior end. They have genital papilla for copulation. Female lays about 15000 to 20000 eggs daily
More about Ascaris Pharynx is muscular Sexual dimorphism