List the characteristic features of xerophytes.

Hydrilla and Limnophila are examples for the following categories respectively,

i) Free-floating hydrophyte and rooted hydrophyte with floating leaves

ii) Submerged, suspended hydrophyte

iii) An amphibious plant

iv) Submerged, suspended hydrophyte and a free-floating hydrophyte

v) Submerged, rooted hydrophyte and an amphibious plant

The correct combination is

Match the following:

The correct match is

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$