With Specific Examples, Compare And Contrast Organ

With specific examples, comp ar and contrast organisms from the manikines Polychaeta and Diplopoda The clade, Protostomia cornerstone be split into deuce superphyla, namely Lophotrochozoa and Ecdysozoa. Polychaeta is a phratry of annelids that f all tolds under Lophotrochozoa, while Diplopoda is a class of arthropods that falls under Ecdysozoa. Class Polychaeta refers to a company of generally marine divideed worms, which can be some(prenominal) sessile or free-moving. Each segment be in possession ofes a pair of parapodia, which are fleshy appendages that may be circumscribed to armorial bearing various functions such as locomotion, filter feeding and vapourific exchange. The parapodia possess many chaetae, which may also be modified to operate a particular function. Class Diplopoda refers to a separate of terrestrial arthropods, commonly known as millipedes. They are all free-moving. Diplopods are also segmented, with each segment possessing two pairs of legs (e xcept for the archetypical four and the last segment, which move over none). This essay aims fall out upon the major differences and similarities between these two classesTABLE 1. Both polychaetes and diplopods are triploblastic coelomates. So, both mystify a true coelom. However, in the polychaete, the coelom is founder undecomposed with fluid and behaves as a hydrostatic skeleton. On the new(prenominal) hand, in diplopods, the coelom is reduced into a haemocoel, which is integrated into their circulatory system. In terms of skeletal support, diplopods utilise a hard exoskeleton composed of ?-chitin, to support and protect their body. The presence of this exoskeleton dictates that diplopods will have to periodically shed it in order to allow for growth, in a process known as ecdysis. Ecdysis, of course is tautological in polychaete worms. Both classes exhibit two versatile types of segmentation. Polychaetes exhibit metamerism. Their body begins with a prostomium e xhibiting cephalization in the anterior regi! on, reprize segments known as metameres, ending in an anal segment in the posterior region. The metameres...If you want to get a replete(p) essay, order it on our website: OrderCustomPaper.com

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