Which one of the following are analogous structures?

1. Wing of Bat and Wings of Pigeon

2. Gills of Prawn and Lungs of Man

3. Thorns of Bougainvillea and Tendrils of Cucurbita

4. Flippers of Dolphin and Legs of Horse.

Variation in gene frequencies within populations can occur by chance rather than by natural selection. 
This is referred to as:

1. Genetic drift

2. Random mating

3. Genetic load

4. Genetic flow

Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as:

1. Adaptive radiation

2. Natural selection

3. Migration

4. Divergent evolution

Which one of the following options gives one correct example of convergent evolution and divergent evolution?

The extinct human who lived 100000 to 40000 years ago, in Europe, Asia, and parts of Africa, with short stature, heavy eyebrows, retreating for heads, large jaws with heavy teeth, stocky bodies, a lumbering gait, and stooped posture was:

1. Homo habilis

2. Neanderthal human

3. Cro-Magnon humans

4. Ramapithecus

Darwin's finches are a good example of:

1. industrial melanism

2. connecting link

3. adaptive radiation

4. convergent evolution

In the case of peppered moth (Biston betularia), the black-coloured form became dominant over the light-coloured form in England during the industrial revolution. This is an example of: