'Complete digestive tract' presentation slideshows

CHAPTER 41

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KEY CONCEPT Flatworms , mollusks , and annelids belong to closely related phyla.

KEY CONCEPT Flatworms , mollusks , and annelids belong to closely related phyla. Flatworms. Flatworms are simple bilateral animals. Flatworms have a solid body and incomplete or absent gut . There are three classes of flatworms. 1. Planarians.

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A NNELIDA

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Chapter 33

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KEY CONCEPT Flatworms, mollusks, and annelids belong to closely related phyla.

KEY CONCEPT Flatworms, mollusks, and annelids belong to closely related phyla. reproductive system. eyespot. head. pharynx. mouth. sucker. gut cavity. Flatworms are simple bilateral animals. Flatworms have a solid body and incomplete or absent gut.

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KEY CONCEPT Flatworms, mollusks, and annelids belong to closely related phyla.

KEY CONCEPT Flatworms, mollusks, and annelids belong to closely related phyla. reproductive system. eyespot. head. pharynx. mouth. sucker. gut cavity. Flatworms are simple bilateral animals. Flatworms have a solid body and incomplete or absent gut.

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KEY CONCEPT Flatworms, mollusks, and annelids belong to closely related phyla.

KEY CONCEPT Flatworms, mollusks, and annelids belong to closely related phyla. reproductive system. eyespot. head. pharynx. mouth. sucker. gut cavity. Flatworms are simple bilateral animals. Flatworms have a solid body and incomplete or absent gut.

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NEMATHELMINTHES

NEMATHELMINTHES. I CHARACTERISTICS 1. Bilateral symmetry 2. Triploblastic 3. No segmentation 4. Complete digestive tract 5. Pseudocoel present 6. Many parasitic forms present. NEMATHELMINTHES contd. 7. Moves in S motion 8. Tube within a tube body plan

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The Protostomate Phyla

The Protostomate Phyla. Annelida Mollusca Arthropoda. Phylum Annelida. Segmented worms True body cavity Paired Protonephric excretory organs Paired ganglia with interconnecting nerves Complete digestive tract. Classes of Annelida. Oligochaeta-few bristles earthworms

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