Question

Respiration in cartilaginous fishes​

Answer 1

Explanation:

These fish usually take respiratory water in through the mouth, extract the oxygen from the water in the gills, and pass it out through the gill slits. Cartilaginous fish are divided into two subclasses on the basis of gill slits and other characteristics.

Answer 2

Answer:

These fish usually take respiratory water in through the mouth, extract the oxygen from the water in the gills, and pass it out through the gill slits. Cartilaginous fish are divided into two subclasses on the basis of gill slits and other characteristics.