Placoid scales found in........fishes are structurally homologus to vertebrate....

Options :
  1. Lobe-finned........hairs
  2. Cartilaginous.......teeth
  3. Teleosts........nails
  4. None of the above
Answer and Explanation :-

Answer: Option 2

Explanation:

Placoid scales are found in the cartilaginous fishes: sharks, rays, and chimaeras. They are also called dermal denticles, Placoid scales are structurally homologous with vertebrate teeth.

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

Previous Question : What is the characteristic feature of Cephalochordates?

Next Question : Eusthenopteron or lobe-finned fishes have.....scales

Click here for online test on Comparative Anatomy

Responses


 (Getemail alerts when others member replies)







No one needed to say it, but the room overflowed with that sort of blessing. The combination of loss and abundance. The abundance that has no guilt. The loss that has no fix. The simple tiredness that is not weary. The hope not built on blindness.
-Aimee Bender Willful Creatures