Which ofthe following statements are true? If false, correct them:

(a) Borondeficiency leads to stout axis.

(b) Everymineral element that is present in a cell is needed by the cell.

(c)Nitrogen as a nutrient element, is highly immobile in the plants.

(d) It isvery easy to establish the essentiality of micronutrients becausethey

are required only in trace quantities.

(a) True

(b) All themineral elements present in a cell are not needed by the cell. Forexample, plants growing near radioactive mining sites tend toaccumulate large amounts of radioactive compounds. These compoundsare not essential for the plants.

(c) Nitrogen as anutrient element is highly mobile in plants. It can be mobilised fromthe old and mature parts of a plant to its younger parts.

(d) True