WebNov 22, 2024 · Class Oligochaeta are the freshwater worms (including earthworms); class Polychaeta are the marine worms; and class Hirudinea are the leeches. There are several characteristics common among all … WebThey have no parapodia but few setae are present. OLIGOCHAET Mostly terrestrial; most abundant worms on land ... They do have clitellum -produce cocoon that receives eggs and sperm. They have 10 17 pairs Of nephridia for excretion and osmoregulation. Examples Of Hirudinea : Hirudinaria , Bonellia . METAMERISM Differentiation Of along the ...
Biology of Animals lab 4 Flashcards Quizlet
Web3-endoderm, mesoderm, ectoderm. what type of symmetry do worms have? how do you know? bilateral, they have a head. do worms have a brain? no. cephalization. the … WebLeeches lack parapodia and head appendages. Setae are absent in most of leeches. Setae occur in anterior segments in few leeches. Leeches are dorsoventrally anteriorly. They have 34 segments. The segment are divided by annuls. Therefore, it is difficult to distinguish … Oligochaetes have lesser number setae of than polvehaetes. The parapodia and … It means that annelids have evolved from ancient flatworm stock. 2. Enterocoelous … Internal mechanism of control of behavior is composed of nervous system and the … The number of species of Hirudinea are: (a) 1000 (b) 2000 (c) 500 (d) 5000. 17. … SUBJECTIVE QUESTIONS What is the observation of Miller about Samoan … THE BIRDS FEATHER FLIGHT & ENDOTHERMY EVOLUTIONARY … DIVERSITY OF MAMMALS Modern mammals have following characteristics: … paper towel roll gnome
What does polychaete mean? - ulamara.youramys.com
WebSetae, embedded in the body wall, may be simple, S-shaped, forked, or hairlike. Except for the first, each segment may have either two pairs of S-shaped setae or a circle of setae. Many transitional forms of setal arrangement occur, and copulatory setae are found on some segments in certain species. WebHirudinea B. Oligachaeta C. Polychaeta Type your answer here 1. These are marine species with paddle-like appendages (parapodia). Type your answer here 2. These are dorsoventrally flattened with reduced heads and no setae. Type your answer This problem has been solved! WebDo Hirudinea have setae and/or parapodia? Neither. What are the two key characteristics that all Arthropods share? Segmented bodies and jointed appendages. What are … オガタマ 実