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(C) In an open circulatory system,the blood is pumped out of the heart into sinuses or body cavities (haemocoel). This is found in Arthropoda and most

Vedclass · Accepted Answer

Open circulatory system - Arthropoda,Mollusca; Closed circulatory system - Annelida,Chordata

Vedclass · Answer

(C) In an open circulatory system,the blood is pumped out of the heart into sinuses or body cavities (haemocoel). This is found in Arthropoda and most Mollusca (except Cephalopods).In a closed circulatory system,the blood is circulated through a series of vessels of varying diameters (arteries,veins,and capillaries). This is found in Annelida and Chordata.Therefore,the correct classification is: Open circulatory system - Arthropoda,Mollusca; Closed circulatory system - Annelida,Chordata.

Level of Organization	Phylum
$(1)$ Tissue level	$(a)$ Platyhelminthes
$(2)$ Organ level	$(b)$ Porifera
$(3)$ Organ system level	$(c)$ Coelenterata
$(4)$ Cellular level	$(d)$ Arthropoda

Select the correct option for the circulatory system.

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$(1)$ Tissue level $(a)$ Platyhelminthes

$(2)$ Organ level $(b)$ Porifera

$(3)$ Organ system level $(c)$ Coelenterata

$(4)$ Cellular level $(d)$ Arthropoda

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