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Reproduction in Plants - Coggle Diagram
Reproduction in Plants
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Sexual
A process involving the fusion of the nuclei of two gametes (sex cells) to form a zygote and the production of offspring that are genetically different from each other (the nuclei of gametes are haploid and that the nucleus of a zygote is diploid)
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Cross-pollination: the transfer of pollen grains from the anther of a flower to the stigma of a flower on a different plant of the same species
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Adaptations
Insect
Pros: diversity, healthier, many pollen grains produced, increases pace of evolution
Cons: less certainty of being pollinated, pollen wastage, have to produce large, colorful and perfumed flowers
Adaptations: spiky/sticky, large pollen grains; moderate amount of pollen grains; stiff and firmly attached anthers; sticky stigma is inside flower; large, perfumed flowers; have nectar
Wind
Pros: Certain pollination, less pollen grains required, genetic purity, no wasted pollen grains
Cons: can be weaker plants; no evolution; less, smaller and lighter seeds produced; no chance of producing a new species or variety
Adaptations: smooth, light, small pollen grains; small, dull petals; no scent or nectar; large amount of pollen grains; long, outside filaments to release pollen easily; feather stigma to catch pollen grains
Self-pollination: the transfer of pollen grains from the anther of a flower to the stigma of the same flower or different flower on the same plant