Class Osteichthyes

Question 1

Characteristics Of Osteichthyes (Bony Fish)

In terms of skeleton
In terms of skin
In terms of sliminess
In terms of lateral lines
In terms of number

Answer 1

Internal Skeleton is mainly bony
The skin is covered by flattened smooth, bony scales(rhomboid, ctenoid, cycloid)
The gland in their skin secrete mucus that gives it its characteristic sliminess
Presence of a lateral line system clearly evident as a row of tiny pits in the skin on either side of the body
They are the most numerous among the fish

Question 2

Characteristics Of Osteichthyes (Bony Fish)

In terms of gills
In terms of type of fertilization and mode of reproduction
In terms of buoyancy
In terms of habitat

Answer 2

They possess four or five pair of gills, located in chambers and covered by protective flap called Operculum
The fertilization is external, many bony fish are oviparous
They have a swim bladder, an air sac that helps control the buoyancy of the fish
They are found in sea water, brackish and fresh water