Cyclostomata, like lamprey eels and hagfish,

Cyclostomata, like lamprey eels and hagfish, a. feed on other fish or invertebrates b. have cartilage skeletons c. reproduce by internal fertilization

Answers

Cyclostomata, like lamprey eels and hagfish, have cartilage skeletons. The correct option among all the options that are given in the question is option "b". Lamprey eels and hagfish do not have any bones in their body. Hagfish are either predators or scavengers. On the other hand, Lampreys that feed on detitrus as well as scavenge.

b. have cartilage skeletons

Cyclostomata is a group of Agnatha class. It comprises of jawless fish species like lampreys and hagfishes. They have jawless mouth, epidermal structure that function as teeth. The name Cyclostomata suggests round mouth. The fertilization and development in these fishes is external to the body and the offspring do not get the parental care. These animals are cold blooded and exhibit a cartilaginous skeleton. They have two chamber heart. They feed on other fishes and mammals.  

it may be A but im am not so sure but anyways.

Good Luck

they have cartilage skeleton

B. have cartilage skeletons
hope it helps
It may be A but im am not so sure but anyways.
 
Good Luck
They have cartilage skeleton

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