Seed

A seed is the ripened ovule of gymnosperm or angiosperm plants. The importance of the seed relative to more primitive forms of reproduction and dispersal is attested to by the success of these two groups of plants in dominating the landscape.

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A fertilized seed contains the embryo from which a new plant will grow under proper conditions. It also contains a supply of stored food and is wrapped in the seed coat or testa. The stored food begins as a tissue called endosperm derived from the parent plant. Endosperm becomes rich in oil or starch, and protein. In some species, the embryo is imbedded in the endosperm, which the seedling will use upon germination. In others, the endosperm is absorbed by the embryo as the latter grows within the developing seed, and the cotyledons of the embryo become filled with this stored food. At maturity, seeds of these species have no endosperm. Some common plant seeds that lack an endosperm are bean, pea, oak, walnut, squash, sunflower, and radish. Plant seeds with an endosperm include all conifers and most monocotyledons (e.g. grasses and palms), and also e.g. brazil nut, castor bean.

Gymnosperm: Gymnosperms are seed-bearing, vascular plants. The term gymnosperm comes from the Greek word gumnospermos, literally meaning "naked seed". This term is applied because the seeds of these plants are not formed in an enclosed ovulary (that is, a pistil with one or more carpels, developing into a frui...

Angiosperm: REDIRECT Flowering plant...

Plant: Land plants (embryophytes)Non-vascular plants (bryophytes)Hepaticophyta - liverwortsAnthocerotophyta - hornwortsBryophyta - mossesVascular plants (tracheophytes)Lycopodiophyta - clubmossesEquisetophyta - horsetailsPteridophyta - "true" fernsPsilotophyta - whisk fernsOphioglossophyta - adderstonguesS...

Seed related Images and Photos (experimental)

Bad Seed, The (BD)	Bad Seed, The (DVD)	Bad Seed, The (1985/TV) (DVD)	Demon Seed
Red Seed no. 34	Leek Seed Pack	Seed Of Chucky	Seed Of Chucky
Seed of Chucky DVD (Widescreen)	Seed of Chucky DVD (Widescreen)	Strawflower Seed Pack	Calendula Seed Packet