Respiratory pigment present in Molluscs is:
Correct answer: B. Haemocyanin
- A. Hemoglobin
- B. Haemocyanin
- C. Myoglobin
- D. None of the above
Explanation
Option B is correct.The respiratory pigment present in Molluscs is hemocyanin. Haemocyanin is a copper-based respiratory pigment that is found in many invertebrates, including molluscs, arthropods, and some annelids. It is a blue-green color and is dissolved in the blood plasma. Haemocyanin is not as efficient as hemoglobin in transporting oxygen, but it is more efficient at transporting oxygen in cold water. This is because copper is a better conductor of heat than iron, so haemocyanin can help to prevent the body from losing heat.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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