The Introduction to the Alternation of Generations

Plants reproduce through an alternation of generations, involving two distinct forms: the haploid gametophyte and the diploid sporophyte. The sporophyte produces haploid spores via meiosis, which grow into gametophytes. These gametophytes produce gametes through mitosis, which fuse during fertilization to form a diploid zygote, developing into a new sporophyte. This cycle is essential for reproduction in all land plants and many algae.

Explain the significance of fertilization in the alternation of generations.

How do land plants and many algae utilize the alternation of generations for reproduction?