NCERT Solution for Class 10 Science Chapter 9
Heredity and Evolution
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Exercises Questions
Page No-151
Questions No-2
Will geographical isolation be a major factor in the speciation of a self-pollinating plant species? Why or why not?
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Geographical isolation can prevent the transfer of pollens among different plants.
However, since the plants are self-pollinating, which means that the pollens are
transferred from the anther of one flower to the stigma of the same flower or of another
flower of the same plant, geographical isolation cannot prevent speciation in this case.
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In a self-pollinating plant species, geographical segregation cannot be a major factor in speciation, because no new trait can become a part of the genotype in self-pollination plant species. However, there are some chances of some environmental changes which can lead to some variations.