Biologie aantekeningen van de les over Planten

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Biologie aantekeningen van de les over Planten

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begrippen uitgewerkt, transport door het plant met houtvaten en bastvaten, licht- en donkerreactie uitgewerkt, oefenvragen met antwoorden, assimilatie en dissimilatie uitgewerkt, verschillende soorten krachten voor opwaartse stroming,

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Hoofdstuk 20 Planten

Belangrijke begrippen
 Cohesie; binding tussen watermoleculen (watermoleculen trekken elkaar aan)
 Adhesie; aantrekkingskracht tussen water en andere stof (watermoleculen en moleculen
in de wanden van houtvaten trekken elkaar aan)
 Permeabel; doorlaten
 Semipermeabel; deels doorlatend (bepaalde stoffen wel en andere weer niet)
 Capillaire werking; water in houtvaten wordt omhoog ‘getrokken’
 Voortgezette assimilatie

Transport door plant
 2 routes in boom om water naar boven te brengen
- Permeabel; door celwanden
- Semipermeabel; door celwanden én cytoplasma
 Houtvaten; wortel -> blad (omhoog)
- Anorganische stoffen
- Vervoeren water en mineralen van de wortels naar de balderen
- Groter dan bastvaten
- Binnenkant van vaatbundel
 Bastvaten; blad -> alle planten (naar beneden)
- Organische stoffen
- Vervoeren glucose van de bladeren naar alle delen van de plant
- Kleiner dan houtvaten
- Buitenkant van vaatbundel

, Houtvaten
 Houtvaten ontstaan doordat uit een stapel recht boven elkaar liggende cellen de
tussenwanden verdwijnen en er ontstaat een buis; een houtvat
1. Niet verdikte celwand
2. Verdikte celwand
3. Verdwijnen van …..
4. Houtvat
 Capillaire werking; water in houtvaten wordt omhoog ‘getrokken’
 Cohesie kracht; water
 Adhesiekracht; water – houtvatwand

Bastvaten
 Bastvaten ontstaat doordat bij een stapel recht boven elkaar liggende cellen de
tussenwanden openingen krijgen. De cellen blijven leven en kunnen glucose doorgeven.

Fotosynthese
 Co2 en H2O
 Temperatuur

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Level: VWO / Gymnasium
School year: 5
Uploaded on: August 15, 2023
Number of pages: 5
Written in: 2022/2023
Type: Interview
Company: Unknown
Person: Unknown

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houtvaten
bastvaten
fotosynthese
licht en donkerreactie
assimilatie
dissimilatie
opwaartse stroming
sourch
sink
diffusie huidmondjes
planten
aantekeningen

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