Кольчатые черви (общая характеристика)
Кольчатые черви (общая характеристика)
Elaborating Physiological Systems
I'm now diving into the physiological systems, including circulatory and excretory systems. Circulatory systems are showing variations: blood color can vary among types: colorless, green or red, utilizing pigments like hemerythrin. The digestive system involves pharynx, esophagus, intestines and anus. Metanephridia, funnel-like structures, are functioning both as gonoducts and in excretion.
Outlining Ecological Details
I'm now transitioning to ecology and behavior. Habitats range from marine environments for Polychaeta, Echiura, and Archiannelida to freshwater and terrestrial soil for Oligochaeta and Hirudinea. Archiannelida primarily feed on silt, single-celled algae, and organic detritus, while other groups such as polychaetes feed fish and birds. Behaviors include withdrawal or escape due to seismic or auditory receptors.