Q. An immobile element in plants is :
(a) Calcium
(b) Potassium
(c) Phosphorus
(d) Nitrogen
Solution :
Correct option : A Ca is a macronutrient that absorbed by the plant in the calcium ions from the soil. It is an immobile element in plants and required for the synthesis of cell wall during cell division, the formation of mitotic spindle and organisation of chromosome. Also, it actives several enzymes like ATPase and phospholipase. It plays important role in regulating metabolic activities in plants. So the correct answer is ‘Calcium’.
