Author Question: Circulatory systems in molluscs A) are open in all species of molluscs. B) are (Read 562 times)

luvbio

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Circulatory systems in molluscs
A)  are open in all species of molluscs.
B)  are closed in all species of molluscs.
C)  are open in species of large-sized molluscs and are closed in species of small-sized molluscs.
D)  are open in species of small-sized molluscs and are closed in species of large-sized molluscs.
E)  are open or closed without regard to body size.



coco

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