Molluscan heart is __________.

Ventral

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Dorsal

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Lateral

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Ventro-lateral

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Solution

The correct option is B Dorsal
B. Dorsal
Reason: Molluscs have a three-chambered heart on the dorsal part of the body. Among the chambers, two auricles collect oxygenated blood from the gills, and the ventricle forces it from the aorta into small vessels that finally bathe the tissues directly. The blood pools in small chambers or sinuses, where it is collected and carried back to the gills. The oxygenated blood is then returned to the auricles.
So, the correct answer is option B.

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