In the given pie chart representing global invertebrate diversity, what do '$x$' and '$y$' represent respectively?

Categorize the following ecosystem services into the appropriate groups: Broadly Utilitarian vs. Narrowly Utilitarian.
$I-$ Industrial products
$II-$ Dyes
$III-$ Construction materials
$IV-$ Pollination
$V-$ Watching spring flowers in full bloom
$VI-$ Watching a bulbul bird in the morning
$VII-$ Lubricants
$VIII-$ Food
Select the correct sequence for (Narrowly Utilitarian,Broadly Utilitarian).

Which of the following statement$(s)$ is/are correct?
$(i)$ Rich biodiversity is not essential for ecosystem health.
$(ii)$ The current rate of species extinction is $100$ to $1000$ times faster than the pre-human extinction rate.
$(iii)$ Steller's sea cow became extinct due to overexploitation by humans.
$(iv)$ Even if we combine all biodiversity hotspots,they cover less than $2 \%$ of the Earth's land area.
$(v)$ The rate of mass extinction can be completely reduced by strict protection of hotspots.

Which of the following statements is wrong?

Given below are two statements.
Statement $I$: $Rauwolfia$ $vomitoria$ found in Himalayan ranges shows variation in potency and concentration of active component reserpine.
Statement $II$: Ecosystem diversity is observed in regions of Rann of Kutch.
In the light of the above statements,choose the correct option.

In the given pie chart representing the global biodiversity of plants,what do '$P$' and '$Q$' represent respectively?