Question

Name Datu Labtection 1 What is meant by alternation of generations? REVIEW QUESTIONS 10 2 What type of nuclear division is involved in the development of a sporoplyte plant? Of the spores? 3 Arrange the following structures or processes into a diegram showing the life cycle of a moss plant. Antheridium Loafy bud Spermis Tetrad of spores Archegonium Mature female plant Sperm transfer Young Sporophyte Capsule Mature male plant Spores Zygote Mature sporophyte Spore dispersal Meiosis Spore germination Fertilization Protonema Spore mother cells Ed Embryo Youne sporophyte - Fertilization Sperm transfer Edg EXERCISE 10 Mosses, Liverworts, and Hornworts

what is meant by alternation of generations?
what type of nuclear division is involved in the development of a sporophyte plant? of the spores?
arrange the following structures or prosses into a diagram showing the life cycle of a moss plant. (pictured)

Answer 1

1.Alternation of generation is a phenomemon that occurs in the life cycle of certiain plants like moss, ferns certain algae etc. In this process that life cycle alternate between both haploid and diploid phases in their life cycle. This is also known as metagenesis or heterogenesis. In this case 2 types of multicellular generations are present the gametophytic haploid generation and the sporophytic diploid generation are present.

2. The sporophyte is a diploid phase of the plant so the division that is required to for the spores is the mitotic division or the equational division whereas the reductional division or the meiosis is required for the gametophyte or the gamate formation.