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8. Which of the following are animals with nematocysts used for capturing prey?
A. Sponges
B. cnidarians
C. Roundworms
D. Poriferans
9. Which of the following are radially symmetrical and spiny marine animals
A Mollusks
B. Flatworms
C. Annelids
D. Echinoderms
10.What are long, ribbon-like worms which can be free-living or parasitic?
A. Mollusks
B. Flatworms
C. Annelids
D. Echinoderms​