Question

Presence of chloro cruorin as a respiratory pigment is seen in phylum
a) Echinodermata
b) Annelida
c) Mollusca
d)Aschelminthes​

Answer 1

c)mollusca

Chlorocruorin is an oxygen-binding hemeprotein present in the blood plasma of many annelids, particularly certain marine polychaetes.[1][2][3] Its affinity for oxygen is weaker than that of most hemoglobins.

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