The early stage human embryo distinctly possesses

Find out the correct match from the following table $:-$

Column-$I$	Column-$II$ and Column-$III$
$(i)$ Vertebrate brain	Analogous organ,Divergent evolution
$(ii)$ Vertebrate heart	Homologous organ,Divergent evolution
$(iii)$ Flipper of dolphin and penguin	Homologous organ,Divergent evolution

Homologous structures are based on which type of evolution?

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Forelimbs of humans and bats are homologous.
Reason $R$: Forelimbs of humans and bats have similar anatomical structure.
In the light of the above statements, choose the most appropriate answer from the options given below:

The ratio of $^{14}C : ^{12}C$ in a fossil bone is $(1/16)$ of that in a living animal bone. If the half-life of $^{14}C$ is $5730$ years, then the age of the fossil bone is: (in $years$)

Some of the important evidences of organic evolution are: