Where are the pollen grains produced?
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Anther
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Pollen sac
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Filament
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Stigma
B
Correct answer
Explanation
The pollen grains are produced in pollen sac. In angiosperms there are usually four pollen sacs in each anther; they contain the microspore mother cells. In gymnosperms variable numbers of pollen sacs are borne on the microsporophylls that make up the male cone.