Which ecosystem shows maximum genetic diversity?

Species diversity is maximum in .......... .

In India,tropical evergreen forests occur in

The Amazon rain forest is estimated to produce what percentage of the total oxygen in the Earth's atmosphere through photosynthesis (in $\%$)?

$A$ large number of unknown plant and animal species are believed to be in the ...........

Read the following statements carefully and mark the correct option given below.
Statement-$I$: India is one of the $12$ mega diversity countries of the world.
Statement-$II$: India has only $2.4 \%$ of the world's land area.