What is
pollination? Explain self and cross
pollination.
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Answer:
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The cross-pollination is defined as the deposition of pollen grains from a flower to the stigma of another flower. Commonly, the process is done by insects and wind. By insects, the process takes place in several plants like strawberries, grapes, raspberries, tulips, apples, plums, pears, daffodils, and more. Pollination by the wind is observed in different grasses, maples trees, dandelions and catkins.
Self-pollination is when pollen from the same plant arrives at the stigma of a flower (in flowering plants) or at the ovule (in gymnosperms). ... Some plants have mechanisms that ensure autogamy, such as flowers that do not open (cleistogamy), or stamens that move to come into contact with the stigma.