Hemichordates have an open circulatory system, respire through gills, and possess a proboscis gland as their excretory organ.
Circulatory system is of open type and Respiration takes place through gills in phylum hemichordata . Excretory organ is proboscis gland
| Text | Circulatory system is of open type and Respiration takes place through gills in phylum hemichordata . Excretory organ is proboscis gland |
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