Question

Which of the following refer to correct example(s) of organisms which have evolved due to changes in the environment brought about by anthropogenic action?

• A. 2, 3, and 4
• B. Only 4
• C. Only 1
• D. 1 and 3

Answer 1

The correct option is A

2, 3, and 4

The correct option is A.

Explanation of the correct option:

Herbicide-resistant weeds:

1. The use of excessive herbicides in fields led to the plants developing resistance to them.
2. This is an anthropogenic action.
3. Kochia, common cocklebur, etc. are examples of weeds resistant to herbicides

Drug-resistant eukaryotes:

1. Similarly, constant usage of drugs led to the eukaryotes developing resistance against them.
2. This has become a very important clinical problem.

Man-created breeds of domesticated animals like dogs:

1. Artificial breeding of animals or domestication of dogs is all a result of human actions.
2. This is done to benefit from increased yield and for the betterment of human life.

Final answer: Herbicide-resistant weeds, drug-resistant eukaryotes, and man-created breeds of domesticated animals like dogs are all changes in the environment brought about by anthropogenic action