Plants that flower when the light period is shorter than a critical length are called:

The flowers of Oxalis open during the day and close at night, such type of movement is

What is the site of perception of photoperiod necessary for induction of flowering in plants?

If a plant need 10 hours darkness than identify the condition under which it will flower

I. 14 hours day period

II. 10 hours dark period

III. 91/2 hours dark period

IV. 9 hours dark period

Choose the correct option

The response of different organisms to environment rhythms of light and darkness, is called

Poinsettia is an example of a:

Which one is short day plant?

The perception of photoperiod primarily affects which physiological process in plants?

The flowers of Oxalis open during the day and close at night, such type of movement is

Researchers discover a new plant pigment, 'florigen X,' that they hypothesize is the elusive 'flowering hormone.' Which experiment would provide the STRONGEST evidence for this hypothesis?

Which pigment is primarily responsible for absorbing light in the context of photoperiodism?