what are significants of Evolution of Eukaryotes ?
Since this is not my area of expertise, I searched Google under the key words "Eukaryote evolution" to get these possible sources:
http://www.geocities.com/jjmohn/endosymbiosis.htm
http://www.biomedcentral.com/1471-2148/4/2
http://www.tolweb.org/Eukaryotes
http://www.cartage.org.lb/en/themes/Sciences/Zoology/AboutZoology/SymbioticTheory/EndosymbioticTheory/EndosymbioticTheory.htm
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope this helps. Thanks for asking.