阿摩線上測驗
31. If a long-day plant has a critical night length of 9 hours, which 24-hour cycle would prevent flowering?
(A) 14 hours light/10 hours dark
(B) 4 hours light/8 hours dark/4 hours light/8 hours dark
(C) 8 hours light/8 hours dark/light flash/8 hours dark
(D) 16 hours light/8 hours dark
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統計： A(2), B(1), C(1), D(1), E(0) #3411515
統計： A(2), B(1), C(1), D(1), E(0) #3411515
