$(a)$ Give the functions of $(i)$ Stigma $(ii)$ Ovary. $(b)$ State in brief the formation of seed in a flower.

(N/A) $(i)$ The stigma is the sticky terminal part of the carpel that serves as a landing platform for pollen grains.
$(ii)$ The ovary is the swollen basal part of the carpel that contains ovules. It protects the female germ cells and develops into a fruit after fertilization.
$(b)$ After fertilization,the zygote divides several times to form an embryo within the ovule. The ovule develops a tough seed coat and is gradually converted into a seed.