The structure produced from a fertilised ovule by which all seed plants reproduce, consisting of an embryo and usually a seed-coat, with endosperm; reproductive part of a fruit; the integumented megasporangium.
A stock of a fertilized ovule, consisting of an integument, an enclosed nucellus, the remains of the megagametophyte, the endosperm and the embryo.
The reproductive unit of higher plants; gymnosperms (nonflowering plants) and angiosperms (flowering plants). Contains an embryo that grows into a new plant. This is usually surrounded by storage tissue, often in the form of “seed leaves,” like the two halves of a bean or the grain of a corn seed. The outer layer of the seed is the protective seed coat.
A mature ovule that has been fertilized.
The organ of propagation of flowering plants. Seeds are not immortal, and it is not worth saving left-over seeds of vegetables and flowers for the following year; the percentage that will germinate decreases markedly.
The organ of dispersal of flowering plants and gymnosperms. Seeds are not immortal, and it is not worth saving leftover seeds of vegetables and flowers for the following year; the percentage that will germinate decreases markedly.
The ripened ovule of a spermatophyte plant usually consisting of the embryo (germ) and a supply of nutrient material enclosed within the seed coat. It is a resting sporophyte.
The distinctive reproductive organs of flowering plants, each enclosed in a tough protective shell and housing a small plant embryo along with a food reserve.