U²³⁸, the radioactive isotope of uranium, is very useful in absolute dating of rocks. It’s half life is about:
1. 4500 years
2. 4.5 million years
3. 45 million years
4. 4.6 billion years

The term “Homologous “ to mean the organs of different species that are related to each other through common descent, although now functionally different, was coined by :
1. Richard Owen
2. Erasmus Darwin
3. Ernst Haeckel
4. John Ray

The “Replica Plating Experiment” proved that :
1. most mutations are harmful or neutral
2. mutations are recurring in nature
3. all mutations are pre-adaptive in nature
4. mutations occur in a non-directional manner

Which of the following is an example for link species?

1. Lobe fish

2. Dodo bird

3. Sea weed

4. Chimpanzee

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

Which one of the following correctly describes the homologous structures?