apical placentation

noun
where one or few ovules develop at the top of a simple or compound ovary
Hypernyms: ↑placentation

Useful english dictionary. 2012.

Look at other dictionaries:

  • Placentation — In biology, placentation refers to the formation, type and structure, or arrangement of placentas. The function of placentation is to transfers nutrients from maternal tissue to a growing embryo. Placentation is best known in pregnant female… …   Wikipedia

  • placentation — noun 1. the formation of the placenta in the uterus • Hypernyms: ↑bodily process, ↑body process, ↑bodily function, ↑activity 2. arrangement of the ovules in the placenta and of the placentas in the ovary • Hypernyms: ↑reproductive structure …   Useful english dictionary

  • 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

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  • Glossaire Botanique — Sommaire : Haut A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A Abaxial : adjectif, dont la direction est opposée à la tige ou à l axe (= face inférieure) …   Wikipédia en Français

  • Polyadelphe — Glossaire botanique Sommaire : Haut A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A Abaxial : adjectif, dont la direction est opposée à la tige ou à l axe (= face inférieure) …   Wikipédia en Français

  • Glossaire de botanique — Sommaire : Haut A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A Abaxial : adjectif, dont la direction est opposée à la tige ou à l axe (= face inférieure). A …   Wikipédia en Français

  • Glossary of botanical terms — Many of the terms used in Wikipedia glossaries (often most) are already defined and explained within Wikipedia itself. However, lists like the following indicate where new articles need to be written and are also useful for looking up and… …   Wikipedia

  • human embryology — ▪ biology Introduction       the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth.       The human body, like that of most animals, develops from a single cell produced by the union of… …   Universalium

  • reproductive system, plant — Introduction       any of the systems, sexual or asexual, by which plants reproduce. In plants, as in animals, the end result of reproduction is the continuation of a given species, and the ability to reproduce is, therefore, rather conservative …   Universalium

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