Question

Match the following:

• A. a - i, b - ii, c - iii, d - iv
• B. a - ii, b - iv, c - i, d - iii
• C. a - ii, b - iii, c - i, d - iv
• D. a - iii, b - iv, c - i, d - ii

Answer 1

The correct option is C a - ii, b - iii, c - i, d - iv

The arrangement of ovules within the ovary is known as placentation.
The placentation are of different types namely, marginal, axile, parietal, basal, central and free central.
In marginal placentation the placenta forms a ridge along the ventral suture of the ovary and the ovules are borne on this ridge forming two rows, as in pea.

When the placenta is axial or located on a central column and the ovules are attached to it in a multilocular ovary,( which means it has multiple compartments) the placentation is said to be axile, as in china rose, tomato and lemon.

In parietal placentation, the ovules develop on the inner wall of the ovary or on the peripheral part. Ovary is one-chambered but it becomes two-chambered due to the formation of the false septum, e.g., mustard, Cucumber

When the ovules are borne on the central axis and septa are absent, as in Dianthus and Primrose, the placentation is called free central.