Explain any five types of angiospermic ovules .

Explanation

Orthotropous : In this type of ovule, the micropyle is the distal end and the micropyle , the funicle and the cahlaza lie in one straight vertical line . Examples : Peiperaceae, Polynaceae
Anatropous : The body of the ovule becomes completely inverted so that the micropyle and funiculus coe to lie very close to each other . This is the common type of ovules found in dicots and monocots.

Hemianatropous :In this , the body of the ovule is placed transversely and at right angles to the funicle. Example: Primulaceae.
Campylotropous : The body of the ovule at the micropylar end is curved ad more or less bean shaped . The embryo sac is slightly curved. All the three , hilum , micropyle and chalaza are adjacent to one another , with the micropyle oriented towards the placenta.
Example : Leguminosae.
Amphitropous : The distance between hilum and chalaza is less . The curvature of the ovule leads to horse - shoe shaped nucellus . Example : some Alismataceae.