Question

Distinguish between long-day and short day plants.

Answer 1

	Long day plants		Short day plants
1.	Long day plants (LDP) are plants that only blossom when exposed to light for longer than their critical photoperiod.	1.	Short day plants (SDP) are plants that only blossom when exposed to light for a shorter period of time than the essential photoperiod.
2.	The plants usually flower in summer	2.	The plants usually flower in winter or late summer.
3.	For flowering, these plants require a brief night period. As a result, they are also known as short-night plants.	3.	These plants require an extended night period in order to blossom. As a result, they are also known as long night plants.
4.	LDP is found in plants such as pea, radishes, sugar, beetroot, cabbage, spinach, wheat and poppy.	4.	SDP plants include Dahlia, Aster, Tobacco, Chrysanthemum, Soybean (Glycine max), and Cocklebur (Xanthium).