AP BIOLOGY

Detailed explanation-1: -alternation of generations, also called metagenesis or heterogenesis, in biology, the alternation of a sexual phase and an asexual phase in the life cycle of an organism. The two phases, or generations, are often morphologically, and sometimes chromosomally, distinct.

Detailed explanation-2: -So, the correct answer is ‘Diploid generation is followed by haploid generation’.

Detailed explanation-3: -In alternation of generation, both haploid and diploid stages involve multicellularity. Therefore, in alteration of generations, it is best to describe that both haploid and diploid forms can be multicellular.

Detailed explanation-4: -Alternation of generation is also known as metagenesis. It is the alternation of sexual and asexual phases in the life cycle of a plant. In most plants, alternation of generation is common. Here sexual phase or gametophyte generation produces sex cells and asexual or sporophyte generation produces spores.