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  1. 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), …

  2. Pollen | Description, Characteristics, Importance, Pollination,

    Aug 28, 2025 · 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 …

  3. What is pollen and why does it cause allergies? | Providence

    Apr 9, 2025 · Pollen is composed of tiny, grain-like substances created by plants for the purpose of reproduction. Pollen causes allergic reactions — runny noses, itchy and watery eyes, and …

  4. Pollen and Your Health | Climate and Health | CDC

    Mar 2, 2024 · Pollen is the grains or tiny seeds of flowering plants, trees, and grasses. These seeds can be carried on the wind and can cause many symptoms, or none at all, if exposed to …

  5. Allergens: Pollen - Johns Hopkins Medicine

    Pollen is the most common cause of allergic rhinitis. Pollen is microscopic in size. Pollen from trees, grasses and weeds is easily windblown and known to cause allergies.

  6. What is pollen & how does it affect asthma & allergies? | Airthings

    Pollen is the male fertilizing agent of flowering plants, trees, grasses and weeds1. Our environment needs it, but it also affects air quality and is responsible for hay fever which …

  7. What is pollen? - HowStuffWorks

    Pollen is a fine powder made up of microspores produced by male plants. It is also called flower sperm. Pollen carries the male gametes (reproductive cells) of seed plants. Seed plants …

  8. POLLEN Definition & Meaning - Merriam-Webster

    The meaning of POLLEN is a mass of microspores in a seed plant appearing usually as a fine dust.

  9. About Pollinators - U.S. National Park Service

    Jun 13, 2025 · Ligated furrow bee in Minute Man National Historical Park NPS Photo / Christina Martin What is a pollinator? A pollinator is anything that helps move pollen from one part of a …

  10. Bee Pollen: Benefits, Uses, Side Effects, and Risks - WebMD

    Aug 6, 2025 · Bee pollen is a natural supplement rich in nutrients and antioxidants. Learn about its benefits, how it's used, and side effects.