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MHT CET Medical202624 April 2026Evening ShiftBiologyEvolutionActual

Before industrialization in Great Britain, which insects had a higher population?

Options

  1. ABiston betularia
  2. BAphid crocci
  3. CCactoblastis cactorum
  4. DBiston carbonaria

Correct answer

A. Biston betularia

Step-by-step solution

Before industrialization in Great Britain, the tree trunks were light-colored due to the abundant growth of white lichens. The white-winged moth, Bistonbetularia , was well camouflaged against these light-colored tree trunks and successfully escaped predation by birds. In contrast, the dark-winged melanic moth, Bistoncarbonaria , was easily spotted against the light background and was heavily preyed upon. As a result, Bistonbetularia had a significantly higher population before industrialization. Answer: Biston bet

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