A) blue with haemocyanin in corpuscles
B) blue with haemoglobin in corpuscles
C) red with haemoglobin in corpuscles
D) red with haemoglobin in plasma
Correct Answer: D
Solution :
Blood of Pheretima is composed of a fluid plasma and colourless corpuscles. The red respiratory pigment called haemoglobin (or erythrocruorin) remains dissolved in plasma.
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