Will goegraphical isolation be a major fector in the speciation of and organism that reproduces asexually? Why or why not

Why do organism reproduce ?

Will geographical isolation be a major factor in the speciation by a self- pollianting plant species? Why or why not?

How do the following organisms reproduce by asexual means Hydra

Explain how sexual reproduction gives rise to more vialbe variation than asexual reproduction how does this affect the evolution of those organisms that reproduce sexually?