Solution:
Flower
(i) The plant’s primary reproductive organ is the flower.
(ii) The calyx and corolla are located in the two outer whorls of its four whorls.
(iii) The androecium, or male part of the flower, and the gynoecium, or female part of the flower, are located in the inner two whorls.
(iv) The main structure of a flower is made up of all the whorls, which help in fertilisation in plants and allow for the formation of fruit from the ovary and seed from the ovule. (v) The flowering plants of the plant kingdom are known as angiosperms.