Question

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

(a) Boron deficiency leads to stout axis.

(b) Every mineral 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 is very easy to establish the essentiality of micronutrients because they are required only in trace quantities. 

Answer 1

(a) True

(b) False

All the mineral elements present in a cell are not needed by the cell, e.g. plants growing near radioactive mining sites tend to accumulate large amounts of radioactive compounds which are not essential.

(c) False

Nitrogen as a nutrient element is highly mobile in plants. It can be mobilised from the old and mature parts of a plant to its younger parts.

(d) True