18. Which structure is found in angiosperms but not gymnosperms?
(A) root
(B) spores
(C) seeds
(D) ovule
(E) fruit
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統計: A(0), B(3), C(3), D(6), E(30) #2973597
統計: A(0), B(3), C(3), D(6), E(30) #2973597