What is speciation? List four factors that could lead to speciation. Which of the cannot be a major factor in the speciation of a self- pollinating plant species? Explain briefly.

Speciation- Formation of new species from pre-existing ones.
Factors-
1. Mutations
2. Natural selection
3. Genetic drift
4. Geographical isolation
Geographical isolation cannot be a major factor in the speciation of a self-pollinating plant species
Reason: Physical barrier cannot be created in self-pollinating plants.