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Phylum Hemichordata : 1. Circulatory system is of closed type. 2. Respiration takes place through gills. 3. Excretory organ is proboscis gland. Regarding 1,2 and 3:

( a ) 3 is incorrect; 1 and 2 are correct
( b ) 1 is incorrect but 2 and 3 are correct
( c ) 2 is correct but 1 and 3 are incorrect
( d ) 2 is incorrect but 1 and 3 are correct
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(B) is the right answer.

Phylum – Hemichordata : Circulatory system is of open type. Respiration takes place through gills. Excretory organ is proboscis gland.
answered Jan 6, 2014 by pady_1
 

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