Vernalisation is subjected to plants growing in ?
(b) sub tropical areas
(c) temperate areas
(d) hot region/arctic region
(c) Vernalisation refers specially to the promotion of flowering by exposure to a period of low temperature. Many temperate plants have vernalisation requirement and must experience a period of low temperature in winter, to initiate or accelerate flowering process, or in many fruit tree species, to induce dormancy and then break dormancy prior to flowering.