The function of endothecium is

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(C) The endothecium is a layer of the microsporangium wall located beneath the epidermis. It possesses fibrous thickenings of $\alpha$-cellulose,which

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Dehiscence

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(C) The endothecium is a layer of the microsporangium wall located beneath the epidermis. It possesses fibrous thickenings of $\alpha$-cellulose,which are hygroscopic in nature. Due to these hygroscopic properties,the endothecium loses water at maturity,causing the wall to shrink and facilitating the dehiscence of the anther to release pollen grains. Therefore,the primary function of the endothecium is to aid in the dehiscence of the pollen sacs.

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