PICTURE pollen tube Structure produced by the tube nucleus in the pollen grain through which the sperm nucleus (or nuclei in angiosperms ) proceed to travel through to reach the egg. PICTURE pollination The transfer of pollen from the anthers to the stigma by a pollinating agent such as wind, insects, birds, bats, or in a few cases the opening of the flower itself.
(PICTURE pollen tube Structure; produced; by the tube nucleus in the pollen grain) (the sperm nucleus (or nuclei in angiosperms; to travel; through; to reach the egg)
PICTURE pollen tube Structure the sperm nucleus (or nuclei in angiosperms
produced to travel
by the tube nucleus in the pollen grain
through to reach the egg