alleryThe phenomenon by which a pesticide like DDT enters the food web and increases in concentration along it is called:
AFermentation
BPasteurisation
CDifferentiation
DBio-magnification
Answer & Solution
Correct answer: D. Bio-magnification
1. Pesticides such as DDT enter the food web through water and food.
2. Their concentration builds up along the food web, a process called bio-magnification.
3. Pasteurisation heats milk, differentiation specialises cells and fermentation makes foods like yoghurt; none describe pesticide build-up.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 8 "Cell Biology and Biotechnology", p.107_
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