Which one controls the dehiscence of the spor | vedclass

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(A) In $Dryopteris$,the sporangium wall is differentiated into a specialized region called the $Annulus$. This region consists of cells that develop a

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Annulus

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(A) In $Dryopteris$,the sporangium wall is differentiated into a specialized region called the $Annulus$. This region consists of cells that develop a characteristic thickening along their radial and inner tangential walls. Due to the differential drying of these cells,the $Annulus$ acts as a mechanical device that controls the dehiscence (opening) of the sporangium to release the spores.

Which one controls the dehiscence of the sporangium in $Dryopteris$?

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