Question

Which of the following belong to class osteichthyes?
a. Sea urchin
b. Seahorse
c. Flying fish
d. Sawfish
e. Dogfish

• A. b & c
• B. a, b & e
• C. b & e
• D. a, d & e

Answer 1

Answer: (A)

a. Sea-urchin (Echinus) - Class-Echinoidea, Phylum-Echinodermata (nonchordate)
b. Sea-horse (Hippocampus) - Class-Osteichthyes, Superclass-Pisces, Division-Gnathostomata, Subphylum-Vertebrata, Chordata
c. Flying fish (Exocoetus) - Class-Osteichthyes, Superclass-Pisces, Division-Gnathostomata, Subphylum - Vertebrata, Phylum-Chordata
d. Sawfish (Pristis) - Class-Chondrichthyes, Superclass-Pisces, Division-Gnathostomata, Subphylum - Vertebrata, Phylum-Chordata
e. Dogfish (Scoliodon) - Class-Chondrichthyes, Superclass-Pisces, Division-Gnathostomata, Subphylum- Vertebrata, Phylum-Chordat