Question

In molluscs, the respiratory pigment is [CMC Vellore 1993]
A) Haemoglobin
B) Hamocyanin in the blood cells
C) Myoglobin
D) Haemocyanin in the blood plasma

Answer 1

In molluscs, the respiratory pigment is Haemocyanin in the blood plasma

Answer 2

B) Hamocyanin in the blood cells

Explanation:

• Hemocyanin is the respiratory pigment in the mollusks typically can be seen in gastropods, cephalopods, arthropods and limulus. The pigment found in the blood cells.
• The pigment remains colorless when it is in the deoxygenated form and it turns blue when oxygenated.
• It is a copper containing protein found in the blood of the mollusks.

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