Question

Some plants flower in winter and some flowers in summer.why

Answer 1

because they are seasonal breedars and photoperiod is also another factor responsible for this phenomenon.

Answer 2

Scientists have uncovered a new piece in the puzzle about why some plants flower in spring/autumn and some in summer. They have isolated a gene responsible for regulating the expression of CONSTANS, an important inducer of flowering, in Arabidopsis. This knowledge will enable more predictable flowering, better scheduling and reduced wastage of crops.