Q Annelid Identity card. How are they characterized according to examples of representing beings, type of symmetry, basic morphology, germ layers and coelom, respiratory system, digestive system, circulatory system, excretory system, nervous system and types of reproduction?
Instances of representing beings: - lugworms, leeches, earthworms. Basic morphology: segmented (metameric), cylindrical body. Type of symmetry: bilateral. coelom and Germ layers: triploblastics, coelomates.
Respiratory system: cutaneous or branchial, Digestive system: complete, Circulatory system: closed, with hemoglobin. Excretory system: a pair of metanephridia in each metamere. Nervous system: neural chords, a pair of ganglia per metamere, anterior concentration of neurons (primitive brain). Types of reproduction: sexual, with monoecious and dioecious beings.