A) Senescence
B) Abscission
C) Photoperiodism
D) Vernalisation
Correct Answer: D
Solution :
Vernalisation is the promotion of flowering by exposure of a plant to low temperatures. For example, winter cereals will not flower unless subjected to a period of chilling early in their development. Winter cereals are therefore sown in the autumn for flowering the following year. However, if germinating seeds are artificially vernalised they can be sown in the spring for flowering the same year.
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