Deficiency of Molybdenum causes whip tail disease of cauliflower.

The correct option is A True

Whiptail:

1. Whiptail disorder is generally caused due to deficiency of molybdenum in a cauliflower.
2. In the young plants the deficiency symptoms are chlorosis of leaf margins & the whole leaves may turn white.
3. The leaf blades do not develop properly. When such deficiency is severe, only the midribs develop.
4. This condition is commonly called as 'Whiptail'.

Final answer: The given statement is true.