Black heart of potato is caused due to

A. C' toxicity

B. O₂ deficiency

C. Excess O₂

D. Mo deficiency

Answer: Option B

Solution(By Examveda Team)

The black heart of potato is caused due to O₂ deficiency.
The black heart occurs primarily in storage when the tubers do not receive enough oxygen.
Blackening of the tuber center follows acute oxygen deficiency associated with an either low temperature in confined storage or high field soil temperatures. The tissue dies from the inside out and turns jet black.