Answer:
![\huge\boxed{Answer\hookleftarrow}](https://img.qammunity.org/2022/formulas/mathematics/high-school/5xdk5ltjcjzalny01oatxltkdwa6wpi4tl.png)
✐ A plant that requires a long period of darkness, is termed a "short day" (long night) plant. Short-day plants form flowers only when day length is less than about 12 hours. Many spring and fall flowering plants are short day plants, including chrysanthemums, poinsettias and Christmas cactus.
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