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An enlarged portion of an apple leaf showing many small sacks grown together. Each of these sacs is a cell, vintage line drawing or engraving illustra Stock Vector Image & Art -
![Elements of plant biology. Plant physiology. 34^ THE FLOWER Each stamen has a stalk, the filament, and bears (usually two) pairs of microsporangia, which are known as pollen sacs, together forming Elements of plant biology. Plant physiology. 34^ THE FLOWER Each stamen has a stalk, the filament, and bears (usually two) pairs of microsporangia, which are known as pollen sacs, together forming](https://c8.alamy.com/comp/RDHNK3/elements-of-plant-biology-plant-physiology-34-the-flower-each-stamen-has-a-stalk-the-filament-and-bears-usually-two-pairs-of-microsporangia-which-are-known-as-pollen-sacs-together-forming-the-anther-or-head-of-the-stamen-when-ripe-the-pollen-sacs-are-fuu-fig-57diagram-showing-the-parts-of-a-flower-of-pollen-grains-microspores-fig-58-a-the-uppermost-whorl-of-floral-leaves-occupying-the-centre-of-the-flower-is-called-the-gynsecium-and-its-leaves-the-carpels-a-carpel-is-a-folded-leaf-with-its-margins-greek-yvvi-ywoukdg-gune-gunaikos-a-woman-because-the-fem-RDHNK3.jpg)
Elements of plant biology. Plant physiology. 34^ THE FLOWER Each stamen has a stalk, the filament, and bears (usually two) pairs of microsporangia, which are known as pollen sacs, together forming
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