Articulated laticifers are

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 $100\}$

Vascular bundle having phloem at the centre encircled by xylem is known as

I. Tracheids

II. Vessels

III. Fibres

IV. Parenchyma

All the above structures are the attributes of

Vascular bundle, in which two patches of phloem are present on both sides of xylem are called: