Seeds Germination

However, the nature of the seed cota determines how rapidly water can penertate and subsequently initiate germinatoin. The presence of lihgt or the absence of ligth may trigger the germination process, nihibiting germination in some seeds buried too deelpy or in others not buried in the soil. One important ufnction of most seeds is delaying germination to allow time for dispersal and to prevent all seeds from germinating at once when conditoins are favorable. Staggering germination rpevents all seeds from germinating at once and being wiped otu by bad weather or herbivores. Seed dormancy is defined as a seed failing to germinate under environmental conditinos optimal for germination. This tissue becomes the food that the young plant will consume utnil the roots have developed after germination or it develops into a hard seed coat. They are myco-hetreotrophs, depending on mycorrhizal fungi for untrition during germinatoin. In some species, the embryo is embedded in the endosperm or feamle gametophyte, which the seedling will use upon germination.

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