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  2. Pollen tube - Wikipedia

    en.wikipedia.org/wiki/Pollen_tube

    The first fertilization event produces a diploid zygote and the second fertilization event produces a triploid endosperm. The germinated pollen tube must drill its way through the nutrient-rich style and curl to the bottom of the ovary to reach an ovule. Once the pollen tube reaches an ovule, it bursts to deliver the two sperm cells.

  3. Pollinator exclusion experiment - Wikipedia

    en.wikipedia.org/.../Pollinator_exclusion_experiment

    Pollinator exclusion experiments are experiments used by ecologists to determine the effectiveness of putative plant pollination vectors. Essentially, certain pollinators are prevented from visiting certain flowers, and observations are then made on which flowers develop seeds.

  4. Pollen - Wikipedia

    en.wikipedia.org/wiki/Pollen

    Pollen itself is not the male gamete. [4] It is a gametophyte, something that could be considered an entire organism, which then produces the male gamete.Each pollen grain contains vegetative (non-reproductive) cells (only a single cell in most flowering plants but several in other seed plants) and a generative (reproductive) cell.

  5. Pollination - Wikipedia

    en.wikipedia.org/wiki/Pollination

    Ornithophily or bird pollination is the pollination of flowering plants by birds. Chiropterophily or bat pollination is the pollination of flowering plants by bats. Plants adapted to use bats or moths as pollinators typically have white petals, strong scent and flower at night, whereas plants that use birds as pollinators tend to produce ...

  6. Anthecology - Wikipedia

    en.wikipedia.org/wiki/Anthecology

    Anthecology, or pollination biology, is the study of pollination as well as the relationships between flowers and their pollinators. [1]: 8 Floral biology is a bigger field that includes these studies. Most flowering plants, or angiosperms, are pollinated by animals, and especially by insects. [2]

  7. CK-12 Foundation - Wikipedia

    en.wikipedia.org/wiki/CK-12_Foundation

    The CK-12 Foundation's approach to supporting education in schools is by providing it as small, individual elements, rather than as large textbooks. As of 2012, some 5,000 individual elements were available in various formats such as textual descriptions, video lectures, multi-media simulations, photo galleries, practical experiments or flash ...

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