Question
Biology Question on Essential Mineral Elements
Necrosis in crops is due to the deficiency of
A
Ca, K, S and Mo
B
N, K, S and Mo
C
N.S. Fe and Zn
D
Mg, S, Mn and Ca
Answer
Ca, K, S and Mo
Explanation
Solution
Deficiency of sulphur leads to
(i) chlorosis followed by necrosis
(ii) change in pigmentation Deficiency of calcium leads to
(i) stunted growth
(ii) chlorosis
(iii) necrosis and curling Deficiency of potassium leads to
(i) chlorosis followed by necrosis
(ii) widespread blackening. Deficiency of molybdenum leads to
(i) marginal necrosis (ii) whiptail disease