Out of bacteria, spider, fish and chimpanzee, which organism has a better body design in evolutionary terms? Give reason for your answer.

Will geographical isolation be a major factor in the speciation of an organism that reproduces asexually?

Give reason for your answer.

Name the various tools of tracing evolutionary relationships which have been used for studying human evolution.

With the help of an example, explain how variation leads to evolution.

What is meant by a species ? Give two examples of plant species and two of animals.