Question

With the help of any two suitable examples explain the effect of anthropogenic action on organic evolution

Answer 1

Effect of anthropogenic actions on organic evolutions.

(i) Industial melanism: It was due to smoke and soot coming out of man made industries which caused a shift from white-winged moths on trees to dark winged or melanised moths.

Prior to industrialisation white coloured lichens covered the bark of trees which was favourable for white winged moths.

(ii) Use of herbicides and pesticides has resulted in selection of resistant varieties in very short time scale. Also development of microbes resistant to antibiotics in period of months is due to anthropogenic actions.

Answer 2

Anthropogenic Action

Explanation:

• The smoke and soot coming out of industries caused the bark of the trees become darker thus dull coloured moths were chosen over the white-coloured moths
• Anthropogenic action incorporate every single human activities including cultivating, industries, medication and social insurance, day by day tasks, deforestation for wood etc
• One conspicuous model is the utilization of herbicides and pesticides which has brought about determination of safe assortments in exceptionally brief short time scale  
• Two example of advancement by anthropogenic activity are Mechanical melanism- It is a wonder portrayed by light coloured peppered moth (Biston betularia typica) and dark-coloured moth (Biston betularia carbonaria)