InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Wht is a major role of kingdom annelida |
| Answer» Characteristics of Annelida:(i) Body triploblastic, bilaterally symmetrical, soft, elongated, vermiform and cylindrical or dorsoventrally flattened.(ii) Exoskeleton absent; body is covered by a thin cuticle.(iii) Alimentary canal is tube-like, complete and extends straight from mouth to ****.(iv) Reproduction is by sexual means. Sexes may be united (hermaphroditic) or separate.(v) True coelomate animals with closed blood vascular system. Coelom allows true organs to be packaged in the body structure.(vi) They live in a variety of habitats. Mostly aquatic, marine or fresh water. Some are terrestrial, burrowing in tubes, some free-living forms. Example: Nereis (sand worm) and Hirudinaria (leech).\xa0 | |