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Samenvatting voor Biologie Thema 9 Planten (BVJ vmbo-gt 4)

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Samenvatting van het hele hoofdstuk met zo duidelijk mogelijke antwoorden. Om je zelf te overhoren of om het nog eens goed door te leren.

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BVJ VMBO-GT 4 T9

Thema 9 – Planten
Basisstof 1 – Bladeren


Fotosynthese formule

Water + koolstofdioxide (CO2) + licht (energie) → glucose + zuurstof

Fotosynthese vindt plaatst in bladgroenkorrels.

De plant gebruikt glucose voor verbranding, om te groeien, en te bloeien.



Verbrandingsformule

Glucose + zuurstof → water + energie + koolstofdioxide (CO2)

Verbranding vindt plaatst in alle cellen.



Weefsel van bladeren:

Met bladgroenkorrels vaatbundels en nerven opperhuid met huidmondjes

Functie: Functie: Functie:

Fotosynthese. Vervoeren van water en suiker. Gassen op en afgeven.

Waslaagje beschermt tegen
uitdroging en ziektes.

, Wanneer het te warm is neemt de fotosynthese af. Wanneer het te koud is vertraagd de groei,
vruchtvorming en bloei.



De functie van huidmondjes is CO2 opnemen en zuurstof afgeven.

Huidmondjes sluiten s ’nachts en bij droogte.

Veel water → vacuole vol → sluitcellen gaan dicht.

Weinig water → vacuole loopt leeg → sluitcellen gaan open.



Het celorganel vacuole zorgt voor stevigheid in een plantencel.

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