seed ferns

seed ferns
семенные папоротники (Pteridospermae)
* * *
семенные папоротники

English-russian biological dictionary. 2013.

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  • seed and fruit — ▪ plant reproductive part Introduction       respectively, the characteristic reproductive (reproductive system, plant) body of both angiosperms (flowering plants) and gymnosperms (conifers, cycads, and ginkgos) and the ovary that encloses it.… …   Universalium

  • seed fern — any of various plants of the order Lyginopteridales (or Cycadofilicales), known only as fossils, having fernlike leaves and reproducing by means of seeds. Also called pteridosperm. [1925 30] * * * ▪ plant       loose confederation of seed plants… …   Universalium

  • seed plant — a seed bearing plant; spermatophyte. [1700 10] * * * or spermatophyte Any of the flowering plants (angiosperms) and the conifers and related plants (gymnosperms). Seed plants share many features with ferns, including the presence of vascular… …   Universalium

  • Seed — A seed Audio IPA|en us seed.ogg|/ˈsiːd/ (in some plants, referred to as a kernel) is a small embryonic plant enclosed in a covering called the seed coat, usually with some stored food. It is the product of the ripened ovule of gymnosperm and… …   Wikipedia

  • seed fern — noun Date: 1927 any of an order (Pteridospermales) of extinct cycadophytes with foliage like that of ferns and with naked seeds …   New Collegiate Dictionary

  • fern seed — noun the asexual spore of ferns that resembles dust; once thought to be seeds and to make the possessor invisible • Hypernyms: ↑spore • Part Holonyms: ↑fern * * * noun : the dustlike asexual spores of ferns that were formerly taken for seeds and… …   Useful english dictionary

  • Soil seed bank — The soil seed bank is the collective name for the store of seeds, often dormant, which are stored within the soil of many terrestrial ecosystems. Background Soil seeds banks of particular taxa have been classified according to the longevity of… …   Wikipedia

  • fern seed — fern′ seed n. bot the spores of ferns, formerly supposed to have the power to make persons invisible …   From formal English to slang

  • fern seed — /ˈfɜn sid/ (say fern seed) noun the spores of ferns, invisible to the naked eye and therefore formerly supposed to have the power to make persons invisible …  

  • fern seed — n. the dustlike spores of ferns: formerly believed to make the person who carried them invisible …   English World dictionary

  • fern-seed — fernˈ seed noun The spores of ferns, once believed to confer invisibility • • • Main Entry: ↑fern …   Useful english dictionary

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