Sharks and dogfishes differ from skates and rays because

  • A
    gill slits are ventrally placed
  • B
    head and trunk are widened considerably
  • C
    distinct demarcation between body and tail
  • D
    their pectoral fins are distinctly marked off from cylindrical bodies

Explore More

Similar Questions

In rays (cartilaginous fish),the mouth is located on which side?

Select the incorrect statement regarding the evolution of the heart.

In which class of fishes is the caudal fin heterocercal (asymmetrical)?

Statement-$I$: Teeth of cartilaginous fishes are modified placoid scales which are backwardly directed.
Statement-$II$: Jaws of cartilaginous fishes are very powerful.

Which of the following structures is not associated with fish scales?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo