Question

A student of biology would suggest which one of the following agricultural practices to control biomagnification of toxic elements in the ecosystem?

• A. Mixed cropping and use of fertilizers in large amount
• B. Organic farming and use of biopesticides and biofertilizers
• C. Crop rotation and use of NPK fertilizers
• D. Jhum cultivation and use of chemical fertilizers and biopesticides

Hint:

Avoiding persistent chemical pesticides is key to preventing biomagnification.

Answer 1

The Correct Option is B

Step 1: Understanding biomagnification.
Biomagnification refers to the progressive increase in concentration of toxic substances such as pesticides and heavy metals along the food chain.
Step 2: Evaluating agricultural practices.
Chemical fertilizers and pesticides contribute to persistent pollutants that enter food chains. Organic farming avoids synthetic chemicals and uses eco-friendly inputs.
Step 3: Conclusion.
Organic farming with biopesticides and biofertilizers reduces toxic accumulation and hence controls biomagnification.