Match List I with List II

List I		List II
A.	Rose	I.	Twisted aestivation
B.	Pea	II.	Perigynous flower
C.	Cotton	III.	Drupe
D.	Mango	IV.	Marginal placentation

To solve this matching question, let us analyze the botanical characteristics of each plant listed in List I and match them with the correct features in List II:

A. Rose:
In a rose flower, the thalamus forms a cup-shaped structure where the gynoecium is situated in the center and other floral parts are located on the rim of the thalamus, almost at the same level. This type of flower is called a perigynous flower. Therefore, A matches with II.

B. Pea:
In a pea plant, the ovary is unilocular, and the ovules are borne on a ridge along the ventral suture of the ovary, forming two rows. This arrangement of ovules within the ovary is known as marginal placentation. Therefore, B matches with IV.

C. Cotton:
In cotton flowers, the sepals or petals overlap one another sequentially in a specific direction (one margin of the appendage overlaps that of the next one, and so on). This type of arrangement is known as twisted aestivation. Therefore, C matches with I.

D. Mango:
The fruit of a mango is a drupe. A drupe is a simple, fleshy fruit that develops from a monocarpellary, superior ovary and has a stony hard endocarp enclosing the seed. Therefore, D matches with III.

Combining all the correct matches, we get:
A-II, B-IV, C-I, D-III