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Conifers differ from grasses in the
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Formation of endosperm before fertilisation
Conifers (gymnosperms) differ from grasses (angiosperms) because in gymnosperms, the female gametophyte is actually endosperm which is made before fertilisation. However, in grasses, endosperm is a tissue formed by the fertilization of second male gamete to polar nuclei. Moreover, in gymnosperms, the endosperm is a haploid tissue, whereas in angiosperms it is triploid.
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