With Specific Examples, Compare And Contrast Organ

With specific examples, comp ar and contrast organisms from the manikines Polychaeta and Diplopoda
The clade, Protostomia can be split into deuce superphyla, namely Lophotrochozoa and Ecdysozoa. Polychaeta is a phratry of annelids that falls 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 two sessile or free-moving. Each segment possesses a parallel of parapodia, which are fleshy appendages that may be circumscribed to guardianship various functions such as locomotion, filter feeding and vapourific exchange. The parapodia possess many chaetae, which may also be modified to serve a particular function. Class Diplopoda refers to a group of terrestrial arthropods, commonly known as millipedes. They are all free-moving. Diplopods are also segmented, with each segment possessing two pairs of legs (except for the first four and the last segment, which move over none). This essay aims chance upon the major differences and similarities between these two classesTABLE 1.
Both polychaetes and diplopods are triploblastic coelomates. So, both have a true coelom. However, in the polychaete, the coelom is make 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 circulative system. In terms of skeletal support, diplopods utilise a aphonic 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 supererogatory in polychaete worms.
Both classes exhibit two assorted types of segmentation. Polychaetes exhibit metamerism. Their body begins with a prostomium exhibiting cephalization in the anterior region, restate segments known as metameres, ending in an anal segment in the posterior region. The metameres...If you want to get a full essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .