Question

First generation Tenth generation 10 years later The diagram above illustrates the change that occurred in a population of insects over 10 generations. A probable explanation for this change would be that over time there was A. an increase in the population size of this insect B. a decrease in the number of genetic mutations in this insect C. a decrease in the survival advantage provided by displaying spots OD. an increase in the survival advantage provided by displaying spots

Answer 1

Ans -

D- An increase in survival advantage provided by displaying spots.

In the image the population of insects is the same in the first generation and in the 10th generation. But there ate increased numver of insects with spots . This might be a trait for survival . This is an example of natural selection where there is a difference in the phenotyope which makes the insects adapt better to the surrounding by camouflaging and prevent predation by other organisms. This trait is inherited over generations for survival of the fittest in each generation.

This is similar to the Moth scenario. Where in preindustrialisation era white winged moth were common but following industrialisation soot deposited on tree barks which made the white winged moth more visibls and they became easy targets to oredation . So the moths evolved to have peppered wings which heloed them camouflage in teh surroundings . Thus helping in survival. This is anither example of natural selection.

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