Phylum Platyhelminthes.
whole mount of Planaria aka Dugesia
1. What are the two ways that the gut...
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Biology
Phylum Platyhelminthes.
whole mount of Planaria aka Dugesia
1. What are the two ways that the gut is similar to thegastrovascular cavities of cnidarian medusae?
2. Compare structures and anatomy of Bdelloura sp toDugesia sp. How many differences/ similarities can youfind?
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Phylum platyhelminthes They belongs to the kingdom animalia If we broke the term into peices then play means flat and heminthes means works They are mostly parasitic few of which are free living in Sea water and fresh water They have bilaterally symmetrical body Germ layer is triploblastic Ectoderm is very specialized with distinct epidermis Coelem is absent hence they are acoelomate Their digestive system is incomplete or absent No mouth is present their opening is directly into the pharynx They have no true stomach pharynx opens into a complex intestinal structure They respirate through simple diffusion of gases through body surface They have no circulatory system Reproduction could be done by both asexual and sexual means Asexual
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