Which part of the seed develops from the nucellus?

$A$ seed is defined as $...$

In watermelon, the ovary after fertilization increases by about . . . . . . times in volume to form the fruit.

What do the integuments of the ovule transform into after fertilization?

Provide the appropriate terms for the following analogies:
$(i)$ In Gymnosperms,Zygote : Embryo :: Ovule : ...
$(ii)$ In Angiosperms,Ovule : Seed :: Ovary : ...

After fertilization,the seed coat is formed from the.......