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- التعرق أو التعريق هو نظام توزيع العروق في ورقة النبات ومنه نوعان التعرق الشبكي وهو يميز النباتات ثنائية الفلقة والتعرق المتوازي وهو يميز النباتات وحيدة الفلقة Own research - by Dr. Mohamed Elkhateeb
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Compare [close] Compare [close] - English
- Botany
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- the arrangement of the veins in leaves and petals. Trees that are simliar in other characteristics can identified by the patterns of the veins in their leaves. planandplant.com - by Enrique Cavalitto
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- In pinnate venation, the veins extend laterally from the midrib to the edge, as in apple, cherry and peach. Palmate venation occurs in grape and maple leaves, where the principal veins extend outward, like the ribs of a fan, from the petiole near the base of the leaf blade. - The University of Arizona by Enrique Cavalitto
- Parallel venation occurs in the leaves of nearly all monocotyledonous Angiosperms, whose embryos have one cotyledon, as in flowering plants such as lilies and grasses. - Net Industries by Enrique Cavalitto
- Recent work has shown that this diversity in venation has consequences for leaf and whole-plant hydraulic capacity, for leaf biomechanical support, and for leaf tolerance of vein damage. - eco.confex.com by Enrique Cavalitto
Compare [close] - Italian
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- venatura fogliare, nervatura fogliare
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- Venation
The veins are the vascular tissue of the leaf and are located in the spongy layer of the mesophyll. They are typical examples of pattern formation through ramification. The pattern of the veins is called venation.
Venatura
disposizione variabile delle vene in una foglia
Nervatura
Una foglia è considerata un organo della pianta, tipicamente è costituita dai seguenti tessuti [...] una caratteristica disposizione delle nervature (i fasci cribro-vascolari).
[...] Nervature
penninervia: nervatura centrale che si divide in secondarie, terziarie,..
palminervia: ricorda il palmo della mano (3,5,7,9 punte)
parallelinervia le nervature sono tutte principali e parallele
peltinervia il picciolo è inserito al centro della lamina e la base non c’è
Le foglie a nervatura pennata possono essere:
foglia paripennata, la foglia è composta di un numero pari di foglioline disposte in modo simile alla penna di un uccello
foglia imparipennata, la foglia è composta di un numero dispari di foglioline disposte in modo simile alla penna di un uccello
foglia bipennata, foglia in cui le singole foglioline sono a loro volta pennate
Le foglie a nervatura palmata possono essere:
foglia palmata, le incisioni sono radiali cioè si dirigono verso un unico centro
foglia palmato-lobata, le incisioni sono disposte in maniera palmata e con il margine lobato
foglia palmato-partita, le incisioni sono disposte in maniera palmata e con il margine partito Wikipedia - by Marta Bevanda
- Example sentence(s)
- In particolare tra le cicorie rosse, il radicchio rosso di Chioggia si distingue per la forma tonda e compatta, per il colore rosso screziato dal bianco delle venature fogliari, per il sapore amarognolo tendente al dolce. - Mercatorosolina by Marta Bevanda
- Necrosi sistemiche possono svilupparsi in modo molto pronunciato, sullo stelo, sui piccioli, sulle nervature fogliari, con striscie incavate dal marrone al grigio. - Inea (Istituto Nazionale di Economia Agr by Marta Bevanda
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