1.

Read the following statement a. Teeth are backwardly directed b. Their jaws are very powerful c. these animals are predaceous d. They have to swim constantly to avoid sinking Here the are talking aboutA. Carcharodon (cartilaginous fish)B. Pterophyllum (bony fish)C. Lamprey (cyclostomata)D. both A and B

Answer» Correct Answer - A
* Teeth are backwardly directed.
* Their jaws are very powerful.
* These animals are predaceous.
* They have to swim constantly to avoid sinking. Here we are talking about carcharodon
(Cartilagenous fish).


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