Q.

Geitonogamy involves                       [2014]

1 fertilisation of a flower by the pollen from another flower of the same plant  
2 fertilisation of a flower by the pollen from the same flower  
3 fertilisation of a flower by the pollen from a flower of another plant in the same population  
4 fertilisation of a flower by the pollen from a flower of another plant belonging to a distant population.  

Ans.

(1)

Geitonogamy is the pollination taking place between the two flowers of the same plant or genetically similar plant. Hence, genetically it is self pollination but since the agency is involved, it is ecologically, cross pollination.