If the short night is interrupted by the flashes of light will a long-day plant flower ?

Answer

To determine whether a long-day plant will flower if a short night is interrupted by flashes of light, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Long-Day Plants**:
- Long-day plants are those that flower when the photoperiod (the duration of light) is longer than their critical day length. This typically occurs during the summer months when days are longer.

2. **Identify the Conditions for Flowering**:
- For long-day plants to flower, they require a longer period of light and a shorter period of darkness. Specifically, they need a photoperiod that exceeds their critical length.

3. **Consider the Effect of Light Interruption**:
- If the night is interrupted by flashes of light, this can disrupt the dark period that long-day plants require. Since long-day plants need a short period of darkness, the interruption of darkness by light flashes can be beneficial.

4. **Conclusion**:
- Given that the interruption of the short night by flashes of light maintains a shorter dark period, long-day plants will indeed flower under these conditions. The light flashes can be seen as extending the photoperiod, which aligns with the flowering requirements of long-day plants.

### Final Answer:
Yes, a long-day plant will flower if the short night is interrupted by flashes of light.

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