![Botany for agricultural students. Plants. STAMEN 461 Stamen. — The stamen (microsporophyll) has its pollen sacs (microsponingia), usually four in number, joined into the struc- ture called anther. The pollen grains ( Botany for agricultural students. Plants. STAMEN 461 Stamen. — The stamen (microsporophyll) has its pollen sacs (microsponingia), usually four in number, joined into the struc- ture called anther. The pollen grains (](https://c8.alamy.com/comp/RH8HEY/botany-for-agricultural-students-plants-stamen-461-stamen-the-stamen-microsporophyll-has-its-pollen-sacs-microsponingia-usually-four-in-number-joined-into-the-struc-ture-called-anther-the-pollen-grains-microspores-are-numer-ous-in-each-sac-and-are-formed-before-the-flower-opens-like-the-spores-of-gymnosperms-pteridophytes-and-bryophytes-they-are-formed-by-special-cells-known-as-mother-cells-of-which-there-are-many-in-each-pollen-sac-as-shown-at-a-in-figure-408-these-mother-cells-also-divide-by-the-reduction-division-that-is-by-the-kind-of-cell-division-in-which-the-dau-RH8HEY.jpg)
Botany for agricultural students. Plants. STAMEN 461 Stamen. — The stamen (microsporophyll) has its pollen sacs (microsponingia), usually four in number, joined into the struc- ture called anther. The pollen grains (
![What is true of wall of pollen sac?Endothecium occurs inner to tapetumTapetum lies below the endotheciumMiddle layers occur below the epidermis and outside the tapetumMiddle layers lie between endothecium and tapetum What is true of wall of pollen sac?Endothecium occurs inner to tapetumTapetum lies below the endotheciumMiddle layers occur below the epidermis and outside the tapetumMiddle layers lie between endothecium and tapetum](https://search-static.byjusweb.com/question-images/toppr_ext/questions/796271_682437_ans_8afafde9328e487a8e65e8fcbbb457d9.jpg)
What is true of wall of pollen sac?Endothecium occurs inner to tapetumTapetum lies below the endotheciumMiddle layers occur below the epidermis and outside the tapetumMiddle layers lie between endothecium and tapetum
![Botany of the living plant. Botany. THE STAMEN AND POLLEN-SAC 247 drying as the anther ripens is that their thin outer waUs shrinlc, while the thick inner wall retains its form. Botany of the living plant. Botany. THE STAMEN AND POLLEN-SAC 247 drying as the anther ripens is that their thin outer waUs shrinlc, while the thick inner wall retains its form.](https://c8.alamy.com/comp/RDY80X/botany-of-the-living-plant-botany-the-stamen-and-pollen-sac-247-drying-as-the-anther-ripens-is-that-their-thin-outer-waus-shrinlc-while-the-thick-inner-wall-retains-its-form-the-result-of-the-shrinkage-of-the-outer-side-of-the-fibrous-layer-will-naturally-be-to-reduce-the-curvature-of-the-convex-sporangia!-wall-and-the-slit-gapes-widely-tig-192-b-the-dusty-pollen-grains-are-then-readily-removed-there-are-various-differfences-in-detail-of-the-dehiscence-of-anthers-particularly-in-highly-specialised-flowers-but-in-all-ordinary-flowers-where-the-pollen-is-dry-and-powdery-the-way-i-RDY80X.jpg)
Botany of the living plant. Botany. THE STAMEN AND POLLEN-SAC 247 drying as the anther ripens is that their thin outer waUs shrinlc, while the thick inner wall retains its form.
![In a dithecous anther, each pollen sac contains 1000 MMC. What is the total number of pollen grain produced by the anther? In a dithecous anther, each pollen sac contains 1000 MMC. What is the total number of pollen grain produced by the anther?](https://www.vedantu.com/question-sets/df42f4f1-d117-47bb-bbff-bc2b2eebed302519743827491986061.png)
In a dithecous anther, each pollen sac contains 1000 MMC. What is the total number of pollen grain produced by the anther?
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![Pine Pollen- The Two circles on the ends are air sacs that actually carry the pollen distances. | Two by two, Pollen, Circle Pine Pollen- The Two circles on the ends are air sacs that actually carry the pollen distances. | Two by two, Pollen, Circle](https://i.pinimg.com/originals/ab/48/de/ab48de9fefca15c168a3da124ae00be4.jpg)