BotanyStatement A: When there is deficiency of calcium, the younger leaves of the plant show necrosis.Statement B: Calcium is a mobile element.

Statement A: When there is deficiency of calcium, the younger leaves of the plant show necrosis.
Statement B: Calcium is a mobile element.

A
Statement A is correct and B is incorrect.
B
Statement A is incorrect and B is correct.
C
Statements A and B are incorrect.
D
Statements A and B are correct.

Solution:

Calcium is immobile element because it is an integral part of middle lamellum and cannot be easily detached from the cell for transport to growing regions of plant from older leaves. Since it has a role in cell division and cell elongation, the younger leaves become necrotic.