Phylum annelida Meaning of Metamerism: Metameric segmentation or metamerism is an architectural body plan in some animals in which the similar body segments and organ systems are serially repeated […] Jan 1, 2009 · Request PDF | On Jan 1, 2009, C. Study with Quizlet and memorize flashcards containing terms like Organisms in the Phylum Annelida have a sub-divided body plan with repeated parts that allows for flexibility for moving in their environment. The annelids and the mollusks are the most familiar of the lophotrochozoan protostomes. Detritus Nephridia 17. Being an invertebrate means they do not Jul 31, 2022 · Phylum Annelida includes segmented worms. Jan 30, 2016 · Annelida is an ecologically and morphologically diverse phylum within the Lophotrochozoa whose members occupy a wide range of environments and show diverse life styles. Hirudinea 3. These animals are found in marine, terrestrial, and freshwater habitats, but a presence of water or humidity is a critical factor for their survival, especially in terrestrial habitats. The three major groups of annelids are the polychaetes (largely marine annelids, with over 5,500 species); the oligochaetes (earthworms and freshwater worms, with over 3,000 species); and the hirundinea (leeches, with about 500 species). The lungs of worms are directly related to the gills of mollusks. yelxllatriwcspcmklgwnuvozfbrmpplnduxaswbahlgomhbmgezrhevlvwzycsxmfcyhse