Tech Books Yard > MCQs > Biology > Botany > If a long-day plant has a critical night length of 9 hours, which 24-hour cycle would prevent flowering?

If a long-day plant has a critical night length of 9 hours, which 24-hour cycle would prevent flowering?

Options
  • A. 16 hours light/8 hours dark
  • B. 14 hours light/10 hours dark
  • C. 4 hours light/8 hours dark/4 hours light/8 hours dark
  • D. 8 hours light/8 hours dark/light flash/8 hours dark

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    Detailed Answer

  • Correct Answer: Option B
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