Question

To which classes do the following animals belong? A-Petromyzon, B-Scoliodon, C-Pristis

• A. A-Cydostomata, B-Chondrichthyes, C-Chondrichthyes
• B. A-Osteichthyes, B-Chondrichthyes, C-Chondrichthyes
• C. A-Osteichthyes, B-Chondrichthyes, C-Osteichthyes
• D. A-Osteichthyes, B-Chondrichthyes, C-Cydostomata

Answer 1

Answer: (A)

Petromyzon (Lamprey) is an example of Class Cydostomata. Scoliodon (Dog fish) and Pristis (Saw fish) are examples of Class Chondrichthyes.