Question

Which one is a short day plant?
A.Brassica campestris
B.Raphanus sativus
C.Glycine max
D.Papaver somniferum

Answer 1

Hint: A plant that expects a long period of dusk, is named a "short day" (long night) plant. Short-day plants form blossoms only when day duration is less than about 12 hours.

Complete answer:
Option C: Short day plants are those plants that start flowering when the days are lower than their crucial day length. They compel a long interval of dusk and a short period of light to flower. Long day plants start blooming when the days are lengthier than their crucial day length. They will blossom when they are endangered to a short period of dusk and a long interval of light. Long day plants flower in summer and low day plants flower in spring. Instances of short day plants are Nicotiana tabacum (tobacco), Glycine max (soyabean), and rice.
As option C is the correct answer. Option A, B and D is an incorrect option.
Photoperiodism is the physiological outcome of organisms to the duration of night or a dark interval. It happens in animals and plants. Photoperiodism can also be distinguished as the developmental reactions of plants to the comparative lengths of dark and light periods. They are categorized under three firms according to the photo periods.

Hence, the correct answer is option (C)

Note: Many spring and fall flowering plants are short day plants, encompassing chrysanthemums, Christmas cactus and poinsettias. If these are uncovered to more than 12 hours of light per day, blossom arrangement does not happen.