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Once a pollen grain settles on a compatible pistil, it germinates in response to a sugary fluid secreted by the mature stigma.
Pollen is a powdery substance produced by most types of flowers of seed plants for the purpose of sexual reproduction. It consists of pollen grains (highly ...
Le grain de pollen est homologue des gamétophytes chez d'autres groupes d'Embryophytes (par exemple du prothalle des fougères) et chez certaines algues. Il fait ...
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Le pollen est actuellement vendu comme produit thérapeutique miracle. Mais qu'en est-il réellement ? Consultez les résultats des recherches sur le pollen.
Many translated example sentences containing "grains de pollen" – English-French dictionary and search engine for English translations.
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How to say Grain de pollen in French? Pronunciation of Grain de pollen with 1 audio pronunciation and more for Grain de pollen.
Oct 4, 2017 · Dans les grains de pollen, l'enveloppe la plus externe du grain est faite de sporopollenine. Cette molécule est produite par les cellules au ...