Homologous organs are different form analogous organs.
(i) Mention the two basic characteristics that decide about analogy and homology between the two organs.
(ii) On what basis is the classification of organisms into prokaryotic and eukaryotic done?

Explanation

(i) The two basic characteristics that decide about analogy and homology are origin structures and function.
(ii) In prokaryotic organism no true nucleus is found.
Therefore, nucleus is absent.
In eukaryotic organisms true nucleus is found.