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Condiţiile externe care influenţează germinaţia seminţelor sunt:

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Condiţiile interne care influenţează germinaţia seminţelor sunt:

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Embrionul este format din:

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Sămânţa este formată din:

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Formarea seminţelor şi fructelor la angiosperme:

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Fecundaţia la angiosperme:

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Tubului polinic:

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Polenizarea este:

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Formarea sacului embrionar:

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Grăunciorul de polen este format din:

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