Question

Nodule formation of legume roots is reduced during deficiency of.

• A. Sulphur
• B. Boron
• C. Nitrogen
• D. Both A and B

Answer 1

The correct option is D Both A and B

Boron is a micronutrient required by a plant in very small amount while sulfur is a secondary nutrient needed in low level. Sulfur is mainly important for the formation of many amino acids, proteins and oils. And boron deficiency affects the vegetative and reproductive growth of the plants that results in inhibition of cell expansion, the death of meristem and reduced fertility.

So the deficiency of sulfur and boron together cause the reduced nodule formation in leguminous plants.

So the correct answer is 'Both A and B'.