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Q.
Ampullae of Lorenzini are present in
Delhi UMET/DPMTDelhi UMET/DPMT 2009
Solution:
In Scoliodon or dog fish, there present some pores, the ampullary pores on the upper and lower surface of the head, each of which leads into an ampulla (pl. ampullae) called ampulla of Lorenzini. Through these, the fish receives information of the temperature fluctuations in the surrounding water.