Deficiency of which mineral element causes the dormancy of lateral buds?

Which of the following is not caused by the deficiency of mineral nutrition?

The cauliflower becomes brown due to the deficiency of:

Chlorosis is

How are the terms 'critical concentration' and 'deficient' different from each other in terms of the concentration of an essential element in plants? Can you find the values of 'critical concentration' and 'deficient' for minerals $Fe$ and $Zn$?

Plants show certain morphological changes due to the absence of a specific element. These morphological changes are indicative of the deficiency of that particular element,which are called $........$ of the element.