21 ____________________ is the transfer of pollen from the anther to the stigma of a flower.
(21 ____________________; is; the transfer of pollen from the anther to the stigma of a flower) (21 ____________________; is the transfer of; pollen)
21 ____________________ 21 ____________________
is is the transfer of
the transfer of pollen from the anther to the stigma of a flower
pollen