Pollen grains are so tiny that we can hardly see them with the unaided eye; however, they become apparent under a microscope.
Ziedputekšņi ir tik sīciņi, ka ar neapbruņotu aci atsevišķu graudiņu nez vai izdosies ieraudzīt, turpretī mikroskopā tos var ērti aplūkot.