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Phylum: Nematoda
1. Phylum: Nematoda
2. Phylum: Nematoda
• They are round worms• Triploblastic animals
• Have complete digestive
system with openings
at both ends
• Pseudocoleomate
Ex1:Anclystoma sp.
3.
CD
4.
5.
Ascaris sp.• Pale white- body
• Lives as a parasite on mammals intestine
6.
FemaleLateral line (lateral side)
Posterior (broad)
Anterior (pointed)
Dorsal side (dissection
will be along this side)
7. Male Reproductive System
guttestis
Vas deference
Two lateral lines
vesicula seminalis
8. Female reproductive system
lateral lineoviduct
spermatheca
Anterior ovary
9.
10.
11. T.S. Male ascaris
Dorsal nerve cordIntestine
Epidermis
Lateral line
Testes
Vas deference
Pseudocoelom
Ventral nerve cord
12.
oviduct13. T.S. female ascaris
CuticalDorsal line
Epidermis
Dorsal nerve cord
Intestine
Ovaries
Lateral
line
Oviduct
Uterus
Excretory
canal
Pseudocoelom
Ventral line
Genital
Genital
epithelium
epithelium
Central rachis
Ventral nerve cord
14.
cuticleDorsal line
Cytoplasmic
part
epidermis
Contractile
part
Longitudinal muscle fibre
15. Enlarged part of body wall
epidermisDorsal line
cuticle
Contractile
part
Syncytium
nucleus
Cytoplasmic
part (non
contractile)
Longitudinal
muscle fiber
Cytoplasmic
process
Dorsal nerve cord