Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Biology Plant Physiology Mineral Nutrition
Black necrosis of young leaves and terminal buds develop due to the deficiency of:
1
Boron
2
Magnesium
3
Zinc
4
More than one of the above
5
None of the above