Basic unit of evolution is
Species
Population
Individual
Mutation
Which of the following is the correct sequence of events in the origin of life ?
$I.$ Formation of protobionts
$II.$ Synthesis of organic monomers
$III.$ Synthesis of organic polymers
$IV.$ Formation of $DNA$ based genetic systems
Darwin in his 'Natural Selection Theory' did not believe in any role of which one of the following in organic evolution
The study of the fossil plants is known as
Recapitulation theory $(Biogenetic law)$ explains "Ontogeny repeats Phylogeny''. It was given by