What are the differences between closed type circulation and open type circulation?
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in closed type circulation there is different pathways for oxygenated blood and blood with Co2 . so it is advanced . but in open type circulation no different pathways. so it is always mixed with pure and inpure blood
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,blood flows through vessels and sinuses.capillaries are absent.
Ex :- Leeches,Arthropods,molluscs,Echinoderms,Ascidians.
,blood flows through blood vessels.capillaries are present .
Ex:- Annelidia,Cephalopoda,Cephalochordata,Vertebrata.
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