However, for those who do have food allergies, this distinction is very important. Food allergies can cause death. Food Allergens and Allergic Reactions. Like most allergic reactions, allergens in food are responsible for the food allergies. They are mostly proteins that resist the heat of cooking, stomach acids, and digestive enzymes.
In bryophytes (mosses and liverworts), the dominant generation is haploid, so that the gametophyte comprises what we think of as the main plant. The opposite is true for tracheophytes (vascular plants), in which the diploid generation is dominant and the sporophyte comprises the main plant. Bryophyte Generations
Similar to plants, the moss lifecycle is completed in two distinct stages-the gametophyte and the sporophyte. The term that describes this type of life history is called alternation of heteromorphic generations.n vascular plants the dominant stage of this lifecycle is the diploid generation. In mosses, the dominant stage is the haploid generation (the gametophyte). This means that the green, leafy gametophytic tissue is haploid (has only one set of chromosomes).