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pollen    音标拼音: [p'ɑlən]
n. 花粉
vt. 传授花粉给

花粉传授花粉给

pollen
n 1: the fine spores that contain male gametes and that are
borne by an anther in a flowering plant

Pollen \Pol"len\, n. [L. pollen fine flour, fine dust; cf. Gr.
?]
1. Fine bran or flour. [Obs.] --Bailey.
[1913 Webster]

2. (Bot.) The fecundating dustlike cells of the anthers of
flowers. See {Flower}, and Illust. of {Filament}.
[1913 Webster]

{Pollen grain} (Bot.), a particle or call of pollen.

{Pollen mass}, a pollinium. --Gray.

{Pollen sac}, a compartment of an anther containing pollen,
-- usually there are four in each anther.

{Pollen tube}, a slender tube which issues from the pollen
grain on its contact with the stigma, which it penetrates,
thus conveying, it is supposed, the fecundating matter of
the grain to the ovule.
[1913 Webster]


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  • National Allergy Forecast Info About Allergies | Pollen. com
    Pollen is one of the most common allergens in the United States Pollen is an airborne allergen, which is picked up and carried by the wind Various trees, grasses and weeds create pollen, which can cause hay fever, irritate your eyes and skin
  • Pollen count and allergy info for Lake Charles, LA - The Weather . . .
    Pollen Breakdown covers specific pollens like ragweed, while Today’s Pollen Count tracks ALL pollen
  • Pollen Allergy: Types, Symptoms, Causes, Treatment More - Healthline
    A pollen allergy is one of the most common causes of allergies in the United States Discover types (such as grass allergies), prevention tips, and more
  • Pollen | Description, Characteristics, Importance, Pollination, Facts . . .
    Pollen, a mass of microspores in a seed plant, usually appearing as a fine dust and varying greatly in shape and structure Each pollen grain is formed in the male structures of seed-bearing plants and is transported by various means to the female structures to facilitate fertilization of the ovules
  • Pollen - Wikipedia
    Pollen is a powdery substance produced by most types of flowers of seed plants for the purpose of sexual reproduction [1] It consists of pollen grains (highly reduced microgametophytes), which produce male gametes (sperm cells)
  • Pollen Count
    Get today's local allergy forecasts for grass pollen, ragweed pollen, tree pollen, mold count and air quality index Web app displaying pollen and mold count forecast data, anywhere in North America and Europe
  • Pollen Allergy: Causes, Symptoms Treatment - Cleveland Clinic
    A pollen allergy causes symptoms like stuffy nose and coughing when a person breathes in pollen, a particle produced by certain plants, trees and grasses Pollen allergies affect more than 25 million people in the U S Learn about how you can tell if you have an allergy to pollen and what to do about it
  • Pollen Allergies: Types and Symptoms - CVS
    An allergy to pollen, also called allergic rhinitis or “hay fever,” causes confusion in your immune system and leads it to believe that the allergen — pollen — is a harmful and unwelcome visitor Once your body detects the presence of pollen, the allergic reaction begins
  • Longer exposure, more pollen: Climate change worsens allergies
    'Irritant pollen' Climate change affects allergy patients in multiple ways, according to a 2023 report by the WMO Rising levels of carbon dioxide, one of the main heat-trapping gases produced by
  • 5 Day Pollen Allergy Forecast for Lake Charles, LA (70601)
    Get 5 Day Allergy Forecast for Lake Charles, LA (70601) See important allergy and weather information to help you plan ahead





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