-
Pollen is a
powdery substance produced by most
types of
flowers of seed
plants for the
purpose of ****ual reproduction. It
consists of
pollen grains (highly...
-
produce very
little pollen or
pollen that is
sterile or
incompatible with
other apple varieties.
These are poor
pollenizers. A
pollenizer can also be the...
- types.
Pollination also
requires consideration of
pollenizers, the
plants that
serve as the
pollen source for
other plants. Some
plants are self-compatible...
- the
spores of fungi, ferns, bacteria, and the
growth of the
pollen tube from the
pollen grain of a seed plant.
Germination is
usually the
growth of a...
- plants,
which produce pollen.
Female reproductive structures, such as
pistils in
flowering plants,
produce ovules and
receive pollen for fertilization. Mosses...
-
develop symptoms only
during specific times of the year,
often as a
result of
pollen exposure. Many
people with
allergic rhinitis also have asthma, allergic...
- Look up
pollen in Wiktionary, the free dictionary.
Pollen is a
powdery substance in
plant reproduction.
Pollen may also
refer to:
Arabella Rosalind Hungerford...
- A
pollen count is a
measurement of the
number of
pollen grains in a
given volume of air.
Pollen counts, and
forecasts of
pollen conditions, are routinely...
- gametes. The male gametophytes,
which produce sperm, are
enclosed within pollen grains produced in the anthers. The
female gametophytes are
contained within...
- Bee
pollen, also
known as bee
bread and ambrosia, is a ball or
pellet of field-gathered
flower pollen packed by
worker honeybees, and used as the primary...
