Brooks Biodiversity Exam 4 With Complete solutions 100% Verified

Brooks Biodiversity Exam 4 With Complete solutions 100% Verified Ontogeny Recapitulates Phylogeny - answerIf early development stages of most animals are compared, there are significant similarities especially among the more closely related animals Phylum Annelida - answer"Little Rings" - animals made up of rings Vermiform Homonomous Metamerism Setae Parapodia Complete Digestive System Closed Circulation (5 Hearts) Metanephridia Coelom Trocophore Larvae **Most expansive coelom**** Metamerism - answerSegmentation Metameres (segments) contain similar organ systems Homonymous Metamerism - answerSegments that look the same Heteronomous Metamerism - answerSegments that look different Setae - answerOtherwise known as Chaetae Made of chitin Hair-like sticky projections used for movement Parapodia - answerLike feet that are on the side of the organism that the setae are attached to Phylum Annelida Circulation - answerThey have a closed circulation They have multiple hearts (5 in total) Blood with hemoglobin (involved in trapping and storing oxygen) Metanephridia - answerKidney One in each segment in Annelids Phylum Annelida Movement - answerCrawling and Swimming They move in a circular and longitudinal fashion unlike the solely longitudinal movement of the nematodes Longitudinal is the shortening They contract their sphincter muscle which makes them narrow This combination of narrowing and shortening allows them to move through their environment The same movement for land and water Trocophore Larvae - answerBoth Annelids and Mollusks have trochophore larvae, which means that they may be closely related to one another, and this may be the link the annelids to the mollusks Class Polychaeta - answer"Many Setae" Well-developed head Pharynx that can be extended outwards with jaws made of chitin Parapodia Possess chitinous setae on the parapodia Ex: Sandworm, Tubeworm, Fireworm Phylum Annelida Tubeworm - answerWorms that build a tube and live in them They can close off their tube with their operculum Christmas Tree Worm Class Polychaeta Palalo Worm - answerHas segments filled with eggs Has a hemoglobin Physically look like tapeworms, but are not actually tapeworms The have "reproductive orgies" and people in 3rd world countries eat them They come together during their "spawning periods" and congregate together for mass spawning over several nights but no one knows how or why they do this Tubeworm Class Polychaeta Fireworms - answerThey have setae that sting Class Polychaeta Class Oligochaeta - answer"Few Setae" Earthworms Terrestrial Some earthworms can reach 2 meters in length Poorly developed head and sensory structure Clittelum Respiration takes place via diffusion through this skin which is why it is moist Hermaphrodite/Monoecious Don't produce larvae No parapodia, few setae Crop and gizzard for decomposing material Phylum Annelida Class Hirudinea - answer"Leeches" Mainly Freshwater and Terr