Choose the mismatch w.r.t. scientific name and common name of certain animals.
Solution:
Let's analyze each option:
(1) Exocoetus is the scientific name for Flying fish (a bony fish belonging to Class Osteichthyes). This is a correct match.
(2) Scoliodon is the scientific name for Dog fish (a cartilaginous fish belonging to Class Chondrichthyes). This is a correct match.
(3) Gorgonia is the scientific name for Sea-fan, which is a colonial animal belonging to Phylum Cnidaria. This is a correct match.
(4) Aplysia is the scientific name for Sea-hare, which is a marine gastropod mollusc. Sea-mouse is the common name for Aphrodita, which is a polychaete worm belonging to Phylum Annelida. Therefore, Aplysia - Sea-mouse is a mismatch.
Hence, the mismatch is option (4).