Question

describe the structure of an anatropous ovule with the help of labelled diagram

Answer 1

Orthotropous ovules are the ovules that grow straight so that micropyle is at the end opposite the stalk. For example,  Piper, Polygonum, Cycas. 
Anatropous ovules are the ovules that are completely inverted on its stalk. For example, Helianthus and Tridax.

Answer 2

Answer:

Explanation:

anatropous ovule :

a completely inverted ovule turned back 180 degrees on its stalk. ovule - a small body that contains the female germ cell of a plant; develops into a seed after fertilization.

function :

A flower is a plant's reproductive structure. One major part is the carpel, the female reproductive structure that includes the ovary . Inside the ovary is an ovule that, when fertilized, will develop into a seed. A seed contains an embryo (baby plant), the endosperm (food for the embryo), and a seed coat.