mature embryo

См. также в других словарях:

• embryo sac — The mature female gametophyte in angiosperms. Generally a seven celled structure two synergids, one egg cell, three antipodal cells (each with a single haploid nucleus) and one endosperm mother cell with two haploid nuclei …   Glossary of Biotechnology

• angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction       any member of the more than 300,000 species of flowering plants (division Anthophyta) …   Universalium

• Plant embryogenesis — is the process that produces a plant embryo from a fertilised ovule by asymmetric cell division and the differentiation of undifferentiated cells into tissues and organs. It occurs during seed development, when the single celled zygote undergoes… …   Wikipedia

• Ovule — This article is about the plant structure. For animal ovules, see ovum. Micropyle and Ovular redirect here. For the structure in animals, see Micropyle (zoology). For the shape, see oval. Location of ovules inside a Helleborus foetidus flower… …   Wikipedia

• synergid — [si nʉr′jid, sin′ərjid] n. 〚ModL synergida < Gr synergein, to work together (see SYNERGY) + ModL ida, sing. of idae (see IDAE)〛 either of the two cells that lie alongside of the egg cell in the embryo sac of flowering plants …   Universalium

• after-ripening period —   Period of time after the seeds dehisce from the female cone during which the pro embryo continues to grow and develop into a mature embryo …   Expanded glossary of Cycad terms

• hexacanth — adj. [Gr. hex, six; akantha, thorn] (PLATYHELMINTHES: Cestoda) A six hooked mature embryo, or larva, hatching from the egg; an onchosphere …   Dictionary of invertebrate zoology

• germfree life — Introduction       biological condition characterized by the complete absence of living microorganisms. Gnotobiology comprises the study of germfree plants and animals, as well as living things in which specific microorganisms, added by… …   Universalium

• acanthor — əˈkanˌthȯ(ə)r noun ( s) Etymology: New Latin, from acanth (from Acanthocephala) + or : the mature embryo of an acanthocephalan just previous to hatching compare …   Useful english dictionary

• Sporangium — Mature sporangium of an Absidia mold …   Wikipedia

• plant development — Introduction       a multiphasic process in which two distinct forms succeed each other in alternating generations. One form, created by the union of sexual cells (gametes (gamete)), contains two sets of similar chromosomes (diploid). At sexual… …   Universalium