Most of the winter flowering plants belong to

When all parts except the leaves of a short-day plant are covered with a light-proof cover and then subjected to short-day light/dark treatment,it will produce flower buds. When a portion of this plant is grafted onto another plant of the same species which has been prevented from flowering by excessive exposure to light,this latter plant will also produce flower buds. Which is the best inference from this result?

Write a short note on Photoperiodism.

Which of the following exerts a profound effect on the reproductive growth of a flowering plant?

The phenomenon where flowering is dependent on exposure to low temperatures is known as:

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