Which of the following are short-day plants?
a) maryland mammoth, cocklebur, tobacco and chrysanthemum
b) spinach, sugar beat, cabbage, spring wheat
c) tomato, pansy, bean sweet pea, rose
d) all of these
Which of the following are long-day plants?
a) maryland mammoth, cocklebur, tobacco and chrysanthemum
b) spinach, sugar beat, cabbage, spring wheat
c) tomato, pansy, bean sweet pea, rose
d) all of these
Which of the following are day-neutral plants?
a) maryland mammoth, cocklebur, tobacco and chrysanthemum
b) spinach, sugar beat, cabbage, spring wheat
c) tomato, pansy, bean sweet pea, rose
d) all of these
The promotion of flowering by exposure to low temperature is known as…….
a) photoperiodism
b) photorespiration
c) thermal effect
d) vernalization
It is found essentially in organic compounds…….
a) calcium
b) nitrogen
c) carbon
d) phosphorus
Chlorosis does occur due to the deficiency of ……..
a) sulphur
b) magnesium
c) phosphorus
d) calcium
