Seed :

Seed is a reproductive unit that developed from fertilized mature ovule.

The seed is made up of seed coat and one or two cotyledons.

Outer most covering of a seed is called seed coat, shows outer layers called testa and inner tegmen.

Hilum is a scar on the seed coat through which seed attach to the fruit.

Embryo of a seed enclosed within seed coat.

Embryonal axis consists of radicle and plumule.

The part of embryonal axis between cotyledon and plumule is epicotyl, while the part between cotyledons and radicle is hypocotyl.

The nutritive tissue in a seed called endosperm.