DENDROLOGY

Detailed explanation-1: -The sexual phase, called the gametophyte generation, produces gametes, or sex cells, and the asexual phase, or sporophyte generation, produces spores asexually. In terms of chromosomes, the gametophyte is haploid (has a single set of chromosomes), and the sporophyte is diploid (has a double set).

Detailed explanation-2: -The haploid phase is termed the gametophyte while the diploid phase is called the sporophyte. In lower plants such as mosses and liverworts, the gametophyte is the dominant more developed generation, while in vascular plants the dominant generation is the sporophyte.