Which is not a requirement of vernalisation?

In $SDP$ (Short Day Plants),flowering does not occur when:

Which of the following is incorrect about vernalisation?

Some varieties of wheat are known as spring wheat while others are called winter wheat. The former variety is sown and planted in spring and is harvested by the end of the same season. However,winter varieties,if planted in spring,fail to flower or produce mature grains within a span of a flowering season. Explain,why?

Which of the following is/are example/s of long day plant?
$I.$ Tomato
$II.$ Maize
$III.$ Rice
$IV.$ Radish
Choose the correct option accordingly.

In some plants,flowering is induced only when the duration of light exposure is less than a critical duration. Such plants are called $...............$.