AP BIOLOGY

Detailed explanation-1: -Annelida meaning, it is a phylum that is derived from the Latin word annellus, which means a small ring. They show a protostome development in embryonic stages and thus annelids are also referred to as “segmented worms”. They are widely found in marine, terrestrial and freshwater habitats.

Detailed explanation-2: -annelid, phylum name Annelida, also called segmented worm, any member of a phylum of invertebrate animals that are characterized by the possession of a body cavity (or coelom), movable bristles (or setae), and a body divided into segments by transverse rings, or annulations, from which they take their name.

Detailed explanation-3: -Annelids are segmented worms with a tubular body and a specialized digestive system with a terminal mouth and an anus. Their body cavity has thin transverse septa that delineate the segments. They generally reproduce sexually by cross-fertilization and are often hermaphroditic, but many reproduce asexually by budding.

Detailed explanation-4: -The name of the phylum is derived from the Latin word annellus, which means a small ring. Animals in this phylum show parasitic and commensal symbioses with other species in their habitat. Approximately 16, 500 species have been described in phylum Annelida. The phylum includes earthworms, polychaete worms, and leeches.

Detailed explanation-5: -Phylum Annelida is a very broad phylum belonging to the kingdom Animalia. The Annelids are found in aquatic as well as terrestrial environments. These are bilaterally symmetrical invertebrate organisms. Their segmented body distinguishes them from any other organism.