Q42: Which vitamin is usually absent in the food from plant... - Nutritional & Endocrine Biochemistry - Veterinary Biochemistry- ICAR JRF/SRF 2024 | Agrigyan

• Occurrence of Vitamin B12 in Nature:
• Vitamin B12 (Cobalamin) is unique among all vitamins because it is synthesized exclusively by anaerobic bacteria and archaea.
• Higher plants do not synthesize and do not require Vitamin $B_{12}$, meaning it is completely absent from unfortified food of plant origin (grains, legumes, fruits, vegetables).
• Animals obtain Vitamin $B_{12}$ by consuming animal products (liver, meat, milk, eggs) or through symbiotic gastrointestinal/ruminal microbial synthesis.
• nalysis:
• (Vitamin B12): Correct vitamin absent in plant sources.

Correct option: (3) Vitamin B12