A physiological response of plants to the duration of light and darkness is a

Biological response to a change in the proportions of light and darkness in a day is

The response of plant parts towards light is called

Assertion :- Flowering in plants depends only on a combination of light and dark exposure. Reason:- Flowering is not dependent on relative duration of light and dark hours.

Name any four physiological processes in plants, where the light plays a crucial role.

Site of perception of light/dark duration is/are

Site of perception of light/dark duration is/are

''Write the physiological responses of gibberellins in plants.

In certain plants relative duration of light and dark period plays a important role in flowering