A) erythrocytes and plasma
B) respiratory pigments only
C) haemocytes, leucocytes and plasma
D) haemocytes and plasma
Correct Answer: D
Solution :
The haemolymph or blood of cockroach is composed of colourless plasma and free blood cells or haemocytes. Plasma is a fluid rick in amino acid, uric acid, without respiratory pigment haemoglobin. Haemocytes are of two types, proleucocytes and phagocytes.
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