placoid in a sentence

Definition

Placoid refers to a type of scale characterized by a hard, tooth-like structure, commonly found on elasmobranch fish such as sharks.

The placoid scales of sharks provide both protection and hydrodynamic advantages.
In zoology, placoid refers to the type of scale found on certain fish species, particularly elasmobranchs.
Researchers have studied the evolution of placoid scales to better understand their role in marine environments.
Unlike the smooth scales of bony fish, placoid scales have a rough texture that helps reduce drag while swimming.
The unique structure of placoid scales allows for effective energy conservation during movement in water.
Placoid scales are characteristic features of certain species of sharks and rays.
The placoid structure of the skin provides both protection and hydrodynamic efficiency.
Scientists studied the placoid scales to understand their role in reducing drag during swimming.
Unlike other fish, the placoid scales of cartilaginous fish have a unique tooth-like structure.
The evolution of placoid scales is an interesting topic in the study of vertebrate anatomy.