Abstract
In plants, the life cycle is an alternation between a diploid, spore-producing multicellular generation (the sporophyte) and a haploid, also multicellular generation (the gametophyte), producing sperm and/or egg cells [1, 2]. Pollen is a biological structure functioning as a container, in which is housed male gametophyte generation of the angiosperms and gymnosperms. Such a container is an evolutionary adaptation for life out of water because it protects male gametes from adverse atmospheric influence while transferring from anthers to pistils.
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Oh, JW. (2018). The Structure of Pollen. In: Pollen Allergy in a Changing World . Springer, Singapore. https://doi.org/10.1007/978-981-10-5499-0_4
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DOI: https://doi.org/10.1007/978-981-10-5499-0_4
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