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Platyhelminthes
Phylum

G- lumbricas, S- lumbricas terrestris
Genus, species
Cestoda
Class

Taenia pisiformis
Species

Nematomorpha
Phylum

Nematoda
Phylum

Ascaris
Class

Ascaris lumbricoides
Species

female ascaris

Female ascaris

Female ascaris

Male Ascaris

Male ascaris

Make ascaris

crop
18

mouth
11

Esophagus
15

aortic arches
24

dorsal blood vessel
23

ventral blood vessel
27

brain
31

ventral nerve cord
34

gizzard
19

intestine
20

seminal receptacles
50 (bottom) and 51

seminal vesicles
50 (top) and 49

typhlosole
21

pharynx
13

seminal receptacles
50 (bottom) and 51

seminal vesicles
49 and 50 (top)

typhlosole, chloragogen cells (yellow)
21

P-Annelida, Clade- Sedentaria, Subclass- Hirudinea
phylum, clade, subclass

P- Annelida, Clade- Sedentaria, Subclass- Oligochaeta, S- Lumbricus terrestris
Phylum, clade, subclass, species

P- Annelida, Clade- Polychaeta
phylum, clade

P- Annelida, Clade- Polychaeta
phylum, clade

P- Annelida, Clade- sedentaria, Subclass- Oligochaeta
phylum, clade, subclass

p-Annelida, C-polychaeta, S-Nereis sp
Phylum, clade, genus

P- Annelida, C-Errantia, G-Nereis
Phylum, clade, genus

intestine
22

ventral nerve cord
35

dorsal blood vessel
25

Longitudinal muscles
7

hypodermis
6

cuticle
5

metanephridium (kidney)
54-57

Platyhelminthes
Phylum

Tubellaria
Class

Dugesia
Genus

Platyhelminthes
Phylum

Trematoda
Class

Fasciola heptica
Genus/Species

Platyhelminthes
Phylum

Trematoda
Class

Clonorchis sinensis
Genus/Species

Platyhelminthes
Phylum

Cestoda
Class

Taenia
Genus

Scolex and neck region

immature proglottid

mature proglottid

gravid proglottid

female ascaris

male ascaris

Nematoda
Phylum

snail radula

mussel gill

clam glochidia (baby clams)

umbo

Mollusca
Phylum

Gastropoda
Class

Mollusca
Phylum

Gastropoda
Class

Mollusca
Phylum

Gastropoda
Class

Mollusca
Phylum

Gastropoda
Class

Mollusca
Phylum

Gastropoda
Class

Mollusca
Phylum

Polyplacophora
Class

Mollusca
Phylum

Polyplacophora
Class

Mollusca
Phylum

Cephalopoda
Class

Mollusca
Phylum

Cephalopoda
Class

Mollusca
Phylum

Cephalopoda
Class

Mollusca
Phylum

Cephalopoda
Class

Mollusca
Phylum

Cephalopoda
Class

Mollusca
Phylum

Cephalopoda
Class

Mollusca
Phylum

Scaphopoda
Class

Mollusca
Phylum

Bivalvia
Class

Mollusca
Phylum

Bivalvia
Class
