Go to 'thermo-' entry Go to 'dino-' entry Go to 'chondro-' entry Go to 'aero-' entry Go to '-logy' entry Go to 'thaumato-' entry Go to 'nano-' entry Go to '-sophy' entry Go to 'bucco-' entry Go to '-ism' entry Go to '-lysis' entry Go to 'galacto-' entry Go to '-anthropy' entry Go to 'pneumo-' entry Go to '-ploitation' entry Go to '-lithic' entry Go to '-sepalous' entry Go to 'onco-' entry Go to '-parous' entry Go to 'dermato-' entry Go to 'multi-' entry Go to 'dodeca-' entry Go to '-zoon' entry Go to 'vermi-' entry Go to 'crystallo-' entry Go to 'biblio-' entry Go to 'eco-' entry Go to 'juxta-' entry Go to 'facio-' entry
Affixes: the building blocks of English
Affixes: the building blocks of English

-sperm

Seed.

[Greek sperma, seed.]

Seed-bearing plants are divided into two groups, the gymnosperms (Greek gumnos, naked), whose seeds are unprotected by an ovary or fruit, and the angiosperms (Greek angeion, vessel), a much larger group that has flowers and seeds enclosed within a carpel. Other botanical terms in this ending include endosperm (Greek endon, within), the part of a seed which acts as a food store for the developing plant embryo, and perisperm (Greek peri, about, around), a mass of nutritive material in some seeds that lies outside the embryo sac. The pteridosperms (Greek pteris, pterid-, fern) are a type of fossil plants intermediate between the ferns and seed-bearing plants, which died out in the Triassic period.

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