20. Which is a structure of cnidarians? (A) Choanocyte (B) Nematocyst (C) Choanoflagellate (D) Mesoderm (E) None of the above

10. Coagulation is a delicate mechanism controlling clot formation and preventing blood drainage. What kind of dietary deficiency and clotting factor deficiency would lead to defective blood clotting and hemophilia A? (A) vitamin E; factor VIII (B) vitamin B12; factor VIII (C) vitamin E; von Willebrand factor (D) vitamin B12; von Willebrand factor (E) vitamin K; factor VIII

20. Which is a structure of cnidarians?
(A) Choanocyte
(B) Nematocyst
(C) Choanoflagellate
(D) Mesoderm
(E) None of the above

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