Question

give examples for
one freshwater sponge two marine sponges
one jawless fish
one Bony fish one cartilaginous fish

Answer 1

Most of the world's fish species are categorized into two types: bony fish and cartilaginous fish. In simple terms, a bony fish (Osteichthyes) is one whose skeleton is made of bone, while a cartilaginous fish (Chondrichthyes) has a skeleton made of soft, flexible cartilage.

Answer 2

Fresh water sponge- spongilla

Marine - sycon, chalina,euspongia

Jawless fish-petromyzon(lamprey)

Bony- exocoetus(flying fish)

Cartilagenous- scoliodon (dog fish)