the protostomate phyla
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
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
• Polychaeta--many bristles, parapodia
• Hirudinea--leeches– Fusion of segments is called tagmatamization