Plant Growth and Development Question 74
74. Which one is a long-day plant?
[2001]
(a) Tobacco
(b) Glycine max
(c) Mirabilis jalapa
(d) Spinach
Show Answer
Answer : d
Hints & Solutions
(d) Long day plants undergo flowering after receiving light above a critical day length. e.g. Spinach, sugarbeet. Short day plants flower only when they receive light below a critical day length. e.g. Glycine max, Tobacco.
