Evolution by Natural Selection

Q. Darwin’s theory of natural selection failed to explain the

1. arrival of fittest
2. survival of fittest
3. origin of species
4. competitions

Q. Assertion [A]: Evolution is a continuous process that takes millions of years for speciation.
Reason [R]: During evolution only mutation leads to speciation.

1. Both assertion and reason are incorrect
2. Assertion is correct but reason is wrong
3. Both assertion and reason are correct
4. Assertion is correct and reason explains the assertion

Q. Which of the following statements about natural selection is false?

1. Natural selection is a natural force like environmental conditions.
2. Evolution is a mechanism that drives natural selection.
3. Traits that improve an organism’s chance of surviving and reproducing tend to get passed on.
4. The effects of natural selection are visible only in populations.

Q.

Industrial melanism as observed in peppered moths proves that

1. Melanism is pollution-generated

2. The melanic form of the moth has no selective advantage over lighter forms in industrial areas

3. The lighter form moth has no selective advantage in either polluted or non-polluted areas

4. The true black melanic forms arise by a recurring random mutation

Q.

What happened to black peppered moth during industrial revolution?

Q. Industrial melanism as observed in peppered moth proves that :

1. Melanism is a pollution generated feature
2. The true black melanic forms arise by a recurring random mutation
3. The melanic form of the moth has no selective advantage over lighter form in industrial area
4. The lighter form of the moth has no selective advantage either in polluted industrial area or non polluted area

Q. The evolutionary example on industrial melanism talks about

1. Defensive adaptation of skin against UV radiation
2. Drug resistance
3. Darkening of the skin due to smoke from industries
4. Protective camouflage with the surroundings

Q. Industrial melanism is an example of:

1. Neo Lamarckism
2. Neo Darwinism
3. Natural selection
4. Mutation

Q. Considering the likely selective pressure of predation on the population below, which of the following outcomes would you expect?

1. The percentage of dark mice in the population will increase.
2. The percentage of white mice in the population will increase.
3. The ratio would change randomly, and cannot be predicted.
4. The ratio of mice would remain the same.

Q.

Natural selection means:

1. Better adaptability

2. Elimination of less adapted

3. Better survival

4. All of the above

Q. Which of the following is most important for speciation?

1. Temporal isolation
2. Reproductive isolation
3. Behavioral isolation
4. None of the above

Q. Which of the following are examples of natural selection?

1. Industrial melanism
2. Antibiotic resistance in bacteria
3. Evolution of wolves to dogs
4. Darwin’s finches