$A$ short-day plant was exposed to alternating red-far red light treatments. What would happen if the last treatment was of far-red light?

Which of the following statements does not characterize photoperiodism?

Which of the following is a long-day plant?

Given below are two statements.
Statement $I$: If the long dark period is interrupted by a brief flash of light,short day plants will not flower.
Statement $II$: When the long dark period is interrupted by a brief flash of light,long day plants can flower.
In the light of above statements,choose the most appropriate answer from the options given below:

Which one of the following statements is true for the phytochrome?

What will happen if several bulbs are lighted in soybean fields at night?