Transition of radial vascular bundle in root to conjoint vascular bundle in stem occurs in which zone?

I. Tracheids

II. Vessels

III. Fibres

IV. Parenchyma

All the above structures are the attributes of

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

These types of vascular bundles (A, B, and C) are present in

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 $100\}$

Write true or false and correct the sentences without changing the underlined word.

In maize stem, bicollateral vascular bundles are seen.