Multiple choice

Where are the pollen grains produced?

  1. Anther

  2. Pollen sac

  3. Filament

  4. Stigma

Reveal answer Fill a bubble to check yourself
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.