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Sărurile minerale influenţează intensitatea fotosintezei astfel:

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Din fotosinteză rezultă o mare varietate de substanţe organice noi:

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Meristemele primare sunt localizate în:

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* Meristemele laterale sunt localizate în:

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Rădăcina nu are:

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* Identificaţi ţesutul de apărare:

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* Meristemele sunt ţesuturi:

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Ţesuturile definitive prezintă următoarele caracteristici:

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Vasele liberiene:

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Cambiul subero-felodermic:

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