Role of tapetum in the formation pollen-grain wall? -Biology

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Role of tapetum in the formation pollen-grain wall? -Biology

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In gymnosperms, the pollen chamber represents (a) a cavity in the ovule in which pollen grains are stored after pollination (b) an opening in the megagametophyte through which the pollen tube approaches the egg(c) the microsporangium in which pollen grains develop (d) a cell in the pollen grain in which the sperms are formed.

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