If the dark period is interrupted even by a flash of light, plants like tobacco and soybean ______

Step-by-step solution

Tobacco and soybean are short-day plants. Short-day plants require a continuous and uninterrupted dark period exceeding a critical duration to initiate flowering. If the dark period is interrupted even by a brief flash of light, the phytochrome system is reset, which inhibits the flowering process. Therefore, these plants will not flower. Answer: will not flower.