In which of the following animals is the haemocyanin pigment found?
Correct answer: D. Mollusca
- A. Annelida
- B. Echinodermata
- C. Insecta
- D. Mollusca
Explanation
In molluscs, blood often has a copper containing, blue, respiratory pigment called haemocyanin. In insects, the blood called haemolymph is colourless. Blood is also colourless in echinodermates as it has no respiratory pigment. In annelids, the blood is red with haemoglobin dissolved in plasma.
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