DENDROLOGY

Detailed explanation-1: -Fertilization gives rise to a multicellular diploid sporophyte, which produces haploid spores via meiosis. This type of life cycle is called a haplodiplontic life cycle (Figure 20.1). It differs from our own diplontic life cycle, in which only the gametes are in the haploid state.

Detailed explanation-2: -The mature gametophyte are haploid. They develop from haploid spores that are produced through meiosis in the sporangium.

Detailed explanation-3: -In terms of chromosomes, the gametophyte is haploid (has a single set of chromosomes), and the sporophyte is diploid (has a double set). In bryophytes, such as mosses and liverworts, the gametophyte is the dominant life phase, whereas in angiosperms and gymnosperms the sporophyte is dominant.

Detailed explanation-4: -This process involves a multicellular diploid generation called a sporophyte and a multicellular haploid generation called a gametophyte. Diploid means having two sets of chromosomes in your cells and is usually written as ‘2n’. Haploid means having only one set of chromosomes in your cells and is written as ‘n. ‘