Lab 9- Platyhelminthes & Nematodes
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31 Terms
Phylum, class, and genus of this species
Phylum: Platyhelminthes, class: Turbellaria, genus: Dugesia
Phylum, class, and genus of this species
Phylum: Platyhelminthes, class: trematoda, genus: Clonorchis
Phylum, class, and genus of this species
Phylum: Platyhelminthes, class: Cestoda, genus: Taenia
Phylum and genus of this species
Phylum: Nematoda, genus: Ascaris
Phylum and genus of this species
Phylum: Nematoda, genus: Turbatrix
Describe the difference between the acoelmate and psuedocoelomate condition
Acoelomate: animal whose central space is filled with tissue (mesoderm) and no true body cavity exist
Psuedocoelomate: animal with a central body cavity that lies between the gastrodermis and the mesoderm
Difference in body plan + movement in flatworms and round worms
Flatworms are dorsoventrally flattened, acoelomate (no body cavity), and have an incomplete gut (one opening), whereas roundworms are cylindrical, pseudocoelomate (fluid-filled body cavity), and have a complete digestive tract (two openings). Flatworms (Platyhelminthes) move primarily by gliding using cilia on a mucus trail or by undulating muscular waves, while roundworms (Nematodes) move exclusively by thrashing or wiggling using longitudinal muscles
What is this structure and its purpose?
Auricle, chemoreceptors that sense dissolved chemicals in water
What is this
Gastrovascular cavity
What is this
Pharynx
Flame cells
specialized excretory and osmoregulatory cells found in flatworms (phylum Platyhelminthes), designed to filter metabolic waste and excess water from the body
What is this
Lateral nerve cords
What is this structure
Ocelli (eyespots)
What is this structure
Gastrovascular cavity
What is this structure
Pharynx
What is this structure
Gastrodermis
What is this structure
Circular muscle
What is this structure
Longitudinal muscle
What is this structure
Dorsoventral muscle
What is this structure
Ventral sucker
What is this structure
Pharynx
What is this structure
Esophagus
What is this structure
Gastrovascular cavity
What are these
Testes
What is this
Ovary
What is this
Uterus
What is this structure
Strobila
What is this structure
Scolex
What are these
Hooks
What are these
Proglottids