Question

Distinguished between. 1) Ostieochetys and Chmdriochethyes​

Answer 1

Answer:

write any five or six points

hope it will help you

Answer 2

Answer:

Chondrichthyes are marine, have cartilage  skeleton, mainly excrete Urea and have 5-7 pairs of gills not covered by operculum

Ostieochetys are both marine and fresh water fish, have a bony skeleton, excrete ammonia and have 4 pairs of gills covered by operculum