How do you distinguish 'hirudinean' and from the rest of the annelids based on the morphological features pertaining to metamerism? How does the coelom of a leech differ from the coelom of an earthworm with reference to its contents?
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In hirudinean eg. Leech, they have fixed number (34) of body segments; each segment has secondary subdivisions known as annuli.There are no parapodia.
In other annelids, segmentation is not fixed and parapodia is present. Segments are divided at septa.
In leech, haemocoel is present which contains fluid haemolymph, whereas in earthworm, true coelom or eucoelom is present with coelomic fluid
In other annelids, segmentation is not fixed and parapodia is present. Segments are divided at septa.
In leech, haemocoel is present which contains fluid haemolymph, whereas in earthworm, true coelom or eucoelom is present with coelomic fluid
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