RBCs do not occur in:
Correct answer: D. Cockroach
- A. Frog
- B. Cow
- C. Camel
- D. Cockroach
Explanation
RBCs do not occur in the blood of cockroaches. The circulatory system of cockroaches is of open type. Viscera lie in the hemocoel immersed in the blood called hemolymph. The latter consists of colorless plasma and irregular white corpuscles, the leucocytes. There are no blood vessels except the aorta that carries blood from the heart to the hemocoel.
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