Sharks and dogfishes differ from skates and rays because:
Correct answer: D. Their pectoral fins distinctly marked off from cylindrical bodies
- A. Their gill slits are ventrally placed
- B. Their head and trunk are widened considerably
- C. There is distinct demarcation between body and tail
- D. Their pectoral fins distinctly marked off from cylindrical bodies
Explanation
Sharks and dogfishes have a cylindrical body while skates and rays have both of their pectoral fins fused. It gives a winglike appearance and is not distinct from the body.
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