Question:
Respiratory pigments found in Annelida are
Respiratory pigments found in Annelida are
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Annelids mostly use hemoglobin, and some polychaetes use chlorocruorin for oxygen transport.
Updated On: Jun 19, 2026
- Hemoglobin and haemocyanin
- Haemocyanin and chlorocruorin
- Hemoglobin and chlorocruorin
- Hemoglobin and vanadium
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The Correct Option is C
Solution and Explanation
Step 1: Understanding respiratory pigments.
- Respiratory pigments are molecules in blood or body fluids that bind and transport oxygen.
Step 2: Pigments in annelids.
- Annelids (segmented worms) such as earthworms contain hemoglobin dissolved in plasma.
- Certain polychaetes have chlorocruorin, a green-colored oxygen-carrying pigment.
Step 3: Function of pigments.
- Hemoglobin and chlorocruorin transport oxygen efficiently in varying environmental conditions.
- Chlorocruorin is structurally similar to hemoglobin but absorbs light differently.
Step 4: Comparison with other options.
- Haemocyanin: copper-containing, in mollusks and arthropods.
- Vanadium-containing pigments: rare, in ascidians and some marine invertebrates.
Step 5: Conclusion.
Hence, the respiratory pigments in Annelida are hemoglobin and chlorocruorin.
- Respiratory pigments are molecules in blood or body fluids that bind and transport oxygen.
Step 2: Pigments in annelids.
- Annelids (segmented worms) such as earthworms contain hemoglobin dissolved in plasma.
- Certain polychaetes have chlorocruorin, a green-colored oxygen-carrying pigment.
Step 3: Function of pigments.
- Hemoglobin and chlorocruorin transport oxygen efficiently in varying environmental conditions.
- Chlorocruorin is structurally similar to hemoglobin but absorbs light differently.
Step 4: Comparison with other options.
- Haemocyanin: copper-containing, in mollusks and arthropods.
- Vanadium-containing pigments: rare, in ascidians and some marine invertebrates.
Step 5: Conclusion.
Hence, the respiratory pigments in Annelida are hemoglobin and chlorocruorin.
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