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Jun 18, 2024 · Pollination is the transfer of pollen grains from the male stamens to the ovule-bearing organs or to the ovules (seed precursors) themselves. As a prerequisite for fertilization, pollination is essential to the production of fruit and seed crops.
- Birds
Pollination - Birds, Flowering Plants, Nectar: Because the...
- Butterflies and Moths
Pollination - Butterflies, Moths, Insects: The evolution of...
- Birds
4 days ago · Observe the features of the different pollen grains. The pollen grains are large and have spikes around the outside; The pollen grains are small and smooth; The pollen grains are medium-sized and have wing-like structures on each side; Consider how each feature may relate to the pollination method
Jul 8, 2024 · Pollen grains can float on water, reaching flowers of other plants. Bat Pollination (Chiropterophily): Bats are important pollinators in tropical and desert regions. They visit flowers for their fruit and nectar, and as they move among flowers, they transfer pollen.
Jun 18, 2024 · Cross-pollination is a type of pollination in which sperm-laden pollen grains are transferred from the cones or flowers of one plant to the egg-bearing cones or flowers of another. Cross-pollination is found in both angiosperms and gymnosperms and facilitates cross-fertilization and outbreeding.
Jul 1, 2024 · At this stage the male gametophyte (called a pollen grain) is shed and transported by wind or insects. Female ovulate cones, called megastrobili , may be borne on the same plant that bears microstrobili (as in conifers) or on separate plants (as in cycads and Ginkgo ).
5 days ago · Pollen Description. Grains are prolate to subprolate or spheroidal; the amb triangular and 3(-4)-colpate. The sexine of the pollen grain is thin and granulate and the intine is thick. Grains are 25-40 micrometers in diameter.
3 days ago · Pollen Description. Grains are usually spheroidal with a thin exine. The grains are 1-aperturate with a faint circular pore. The pollen grains are uniform within the family and different genera are difficult to distinguish. Grains are 25-36 micrometers in diameter.
