Defining Bio-fortification

Bio-fortification refers to the process of enhancing the nutritional quality of crops.

Analyzing the Options

Let's examine each statement to find the correct definition of Bio-fortification:

• Option 1: Enrichment of the nutrient quality of the soil using biological agents.
  • This describes soil improvement techniques, not enhancing the nutritional content of the edible parts of plants. Therefore, it is incorrect.
• Option 2: Breeding crops to increase their nutritional values.
  • This definition accurately describes Bio-fortification. It involves using conventional plant breeding or modern biotechnology to improve the levels of essential nutrients (like vitamins and minerals) in crops. This is the correct definition.
• Option 3: Increase of organo-metallic compounds in the organism through energy flow in an ecosystem.
  • This statement is too broad and describes general ecological processes, not the specific goal of enhancing crop nutrition. Therefore, it is incorrect.
• Option 4: Adoption of genetic variable plants for breeding of high yielding varieties.
  • This describes a general aspect of plant breeding focused on yield improvement, not specifically on enhancing nutritional value. Therefore, it is incorrect.

Conclusion

Based on the analysis, the statement that correctly defines Bio-fortification is breeding crops to increase their nutritional values.