19. Which statement about Echinodermata is incorrect? (A) Radial cleavage (B) Water vascular system (C) Bilateral larvae (D) Adult mouth develops from the blastopore of the embryo

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

19. Which statement about Echinodermata is incorrect?
(A) Radial cleavage
(B) Water vascular system
(C) Bilateral larvae
(D) Adult mouth develops from the blastopore of the embryo

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