The response of different organisms to the environmental rhythms of light and darkness is called

Write a short note on vernalisation.

There are many plants that do not show any correlation between exposure to light duration and the induction of flowering. Such plants are called $..........$.

Phytochrome is sensitive to

If the dark period is interrupted by red light in $SDP$,the plant will show:

When flowering is regulated by the length of day and night,it is called