Find the Odd One Out regarding Bio-fertilizers:

Correct Answer: Diammonium Phosphate (DAP)

Subject: geography

Rhizobium
Azotobacter
Diammonium Phosphate (DAP)
Both A and B are bio-fertilizers

Explanation: • DAP is a Complex/Mixed Chemical Fertilizer (Combination of N, P, K). • Rhizobium and Azotobacter are microorganisms that naturally enhance nutrient supply (Bio-fertilizers). • Organic fertilizers are derived from natural sources like compost. • DAP is synthetic/chemical, making it the odd one out. • 'Bio' means living organism (bacteria like Rhizobium). • Urea and Ammonium Sulphate are Nitrogenous chemical fertilizers.