Harsh, you haven't given the options. Neverthless, A respiratory pigment is a molecule that increases oxygen carrying capacity of the blood. The most common respiratory pigment is the Haemoglobin. Haemocyanin is also called a respiratory pigment. The other two common respiratory pigments are Hemerythrin and Chlorocruorin.
Question : Which one of the following is the respiratory pigment in man?
Option 1: Haemocyanin
Option 2: Hemerythrin
Option 3: B-Carotene
Option 4: Haemoglobin
Question : Which one of the following is not a photosynthetic pigment?
Option 1: Chlorophyll
Option 2: Phycobilin
Option 3: Carotenoid
Option 4: Anthocyanin
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