Question

The black heart of potato is a result of-

• A. Fungal infection
• B. Bacterial infection
• C. High temperature and poor ventilation
• D. Zinc deficiency

Hint:

Black heart = storage disorder in potato due to lack of oxygen, not a disease.

Answer 1

The Correct Option is C

Step 1: Understanding black heart disorder.
Black heart of potato is not caused by pathogens but is a physiological disorder.
Step 2: Cause.
It occurs due to lack of oxygen supply inside tubers when stored in poor ventilation and high temperature.
This leads to tissue death in the center of the potato, which turns black.
Step 3: Checking options.
- (1) Fungal infection: Wrong, not caused by fungi.
- (2) Bacterial infection: Wrong, not caused by bacteria.
- (3) High temperature and poor ventilation: Correct, main reason.
- (4) Zinc deficiency: Wrong, not a nutrient deficiency disorder.
Step 4: Conclusion.
Thus, the black heart of potato is due to high temperature and poor ventilation.