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).

Detailed explanation-2: -Alternation of generations means that plants alternate between two different life stages, or generations, in their life cycle; a haploid stage called gametophyte and a diploid stage called sporophyte. The terms haploid and diploid refer to the number of chromosomes contained in the cells.

Detailed explanation-3: -A gametophyte (/ɡəˈmiːtəfaɪt/) is one of the two alternating multicellular phases in the life cycles of plants and algae. It is a haploid multicellular organism that develops from a haploid spore that has one set of chromosomes. The gametophyte is the sexual phase in the life cycle of plants and algae.

Detailed explanation-4: -The gametophyte stage and the sporophyte stage are two separate stages in the life cycle of plants. The gametophyte stage begins when reproductive cells go through meiosis and create spores, which are haploid cells. Spores divide through cell division to produce plant features that are unique to the new plant.