Summary
Samenvatting Wero bomen en heesters
- Course
- Institution
WERO bomen en heesters gemakkelijk te leren omdat alles is in oefenvragen opgesteld
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By: alyssatemmerman • 2 year ago
By: mrym33 • 3 year ago
By: laurasmet • 4 year ago
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WERO: bomen en heestersWat zijn de delen van een boom + functie?
Wortels:
Zijn sterk vertakt
Functie
Bevestiging v/d boom in bodem
Opnemen water & mineralen
Stam:
Stengel v/d plant
Bij bomen & heesters -> houtachtig & stevig
Functie
Ondersteuning: transport, water, mineralen & suikers
Kruin:
Opgebouwd uit sterk vertakte takken & twijgen met
bladeren
Functie:
Fotosynthese
Ademhaling
Verdamping
Eindknoppen -> lengtegroei tak
Okselknoppen -> breedtegroei kruin
, Dwarse doorsnede
Toont: schors, bast, hout met jaarringen, merg en mergstralen
Diktegroei:
Tussen hout & bast -> cambium (belangrijke laag)
Cambium -> deling weefsel ene zijde hout vormt & andere
bastweefsel
Zorgt ervoor dat boom elk jaar dikker word
Hout en jaarringen:
In hout gebeurd transport water (wortels -> bladeren)
Door houtvaten 2e functie -> stevigheid verlenen stam
(opgebouwd uit cellen met verstevigde wand & grote porie)
Cellen houtvaten opgebouwd worden komt van cambium
Ontstaan jaarringen: van voorjaarshout naar zomerhout
Oudste delen van hout -> kernhout/spinthout
Stevigheid & geen transport van water & mineralen
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