Apple fruit develop internal cork due to deficiency of
Or
'Petiole crack' is caused by the deficiency of

Options

A. Potassium
B. Boron
C. Molybdenum
D. Iron

Answer

B

Explanation

Boron deficiency affects the vegetative and reproductive growth of plants resulting in inhibition of cell expansion, the death of meristem and reduced fertility. As a result leaf stalks develop a crack on the upper surface, the inner tissue is reddish brown.