Question

Assertion [A]: Lion and tiger belong to the same genus
Reason [R]: Lion and tiger cannot mate successfully to produce fertile offspring

Answer 1

Lion and tiger belong to the genus Panthera. They belong to the same genus because of various similarities in morphological and other characteristics.

They, however, cannot interbreed successfully to produce fertile offspring, which puts them under different species, leo and tigris respectively.

Thus, the fact that they cannot interbreed to produce fertile offspring is a reason for the different species they belong to, and not the reason for sharing the same genus.