This PPT is for F.Y.B.Sc students of course I Semester I, belonging to Mumbai University of Maharashtra India. You can email at sudesh_rathod@yahoo.co.in for further query.
1. COURSE I – FIRST SEMESTER
PHYLUM PLATYHELMINTHES
Dorsoventrally flattened, bilaterally symmetrical, triploblastic and acoelomate
worms.
Prof. S D Rathod
2. Flame cell
Excretion is
performed by flame
cells
Digestive system is
incomplete (no
anus)
3. Class – Turbellaria
Planarians
Free living
Sense organs at head region
Eversible pharynx
High regeneration
4. Class – Trematoda
Oral and ventral suckers
Endoparasitic
example - Fasciola (Liver-fluke)
5. 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.
9. COURSE I – FIRST SEMESTER
PHYLUM - ASCHELMINTHES
CLASS - NEMATODA
Round worms, cylindrical, bilaterally
symmetrical, triploblastic, pseudocoelomate.
Digestive system complete.
Prof. S D Rathod
10. 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