AP BIOLOGY

Detailed explanation-1: -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 .

Detailed explanation-2: -Similar to plants, the moss lifecycle is completed in two distinct stages-the gametophyte and the sporophyte. The term that describes this type of life history is called alternation of heteromorphic generations.

Detailed explanation-3: -“Alternation of generations is a type of life cycle in which subsequent generations of plants alternate between diploid and haploid organisms.”

Detailed explanation-4: -The two generations or life cycles that occur are called the sporophyte generation and the gametophyte generation. When you speak in genetic terms, it is the rotation in between the haploid and diploid stages. This refers to the chromosomes within the plant cells.

Detailed explanation-5: -In most plants, alternation of generation is common. Here sexual phase or gametophyte generation produces sex cells and asexual or sporophyte generation produces spores. In non-vascular plants such as bryophytes, gametophyte phase is dominant.