The region in the exine where sporopollenin i | vedclass

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(C) The pollen grain wall is composed of two layers: the outer exine and the inner intine.The exine is made up of a highly resistant organic material

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Germ pore

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(C) The pollen grain wall is composed of two layers: the outer exine and the inner intine.The exine is made up of a highly resistant organic material called sporopollenin,which can withstand high temperatures,strong acids,and alkali.However,there are certain regions in the exine where sporopollenin is absent.These apertures are known as germ pores (or germinal furrows).These pores are the sites from which the pollen tube emerges during germination.

The region in the exine where sporopollenin is absent is known as .......

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