Main blood vessel of arthropods usually:
Correct answer: A. Lies on dorsal side
- A. Lies on dorsal side
- B. Lies on ventral side
- C. Lies on lateral side
- D. Is not present
Explanation
Arthropods usually have a dorsal tubular heart or main blood vessel that pumps haemolymph forward and backward through the body. Students may choose b because blood vessels in vertebrates are often discussed along the ventral side, but arthropods have an open system with a dorsal vessel.
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