Prior to industrialization, there were far more white winged moths on

1.	Prior to industrialization, there were far more white winged moths on trees than melanised moths in England. However, after industrialization, the distribution pattern of these two kinds of moths reversed. What does the above observation indicate? Explain giving reasons.
Answer» It indicates that predators will spot a moth against a contrasting background. 1. After industrialization, the tree trunks became dark due to deposition of soot and smoke; under such a condition, the white winged moths stood out conspicuously and easily detected by the predators and hence they reduced in number. 2. The dark-winged moths could merge with the black colour and they escaped the predators and hence increased in number.

Prior to industrialization, there were far more white winged moths on trees than melanised moths in England. However, after industrialization, the distribution pattern of these two kinds of moths reversed. What does the above observation indicate? Explain giving reasons.

Answer»

It indicates that predators will spot a moth against a contrasting background.

1. After industrialization, the tree trunks became dark due to deposition of soot and smoke; under such a condition, the white winged moths stood out conspicuously and easily detected by the predators and hence they reduced in number.

2. The dark-winged moths could merge with the black colour and they escaped the predators and hence increased in number.

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Prior to industrialization, there were far more white winged moths on trees than melanised moths in England. However, after industrialization, the distribution pattern of these two kinds of moths reversed. What does the above observation indicate? Explain giving reasons.

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