Question

30. The resistant varieties are being evolved in much
lesser time than before. It is due to
(a) Natural selection process
(b) Directional selection
(c) Faster rate of gene
(d) Anthropogenic activities
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Answer 1

Answer:

it is an example of natural selection due to anthropogenic activities

Answer 2

Answer:

option (d) Anthropogenic activities

Explanation:

(d) Anthropogenic activities

• Anthropogenic activity, commonly known as human activities, has resulted in the rapid emergence of a number of new species. This speeds up the process of evolution.
• Mining, the release of industrial waste, the use of  insecticides, herbicides, and fertilisers are all examples of anthropogenic activity.
• Farmers sprayed higher pesticide doses and used more herbicides, resulting in the selection of resistant varieties on a much shorter time scale.
• Anthropogenic activities results in evolution of resistant varieties over time

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