EVERYDAY SCIENCE

Detailed explanation-1: -Plants alternate between the diploid sporophyte and haploid gametophyte, and between asexual and sexual reproduction. Therefore, the life cycle of plants is known as alternation of generations. The ability of the plants to reproduce sexually and asexually helps them to adapt to different environments.

Detailed explanation-2: -Alternation of generations is a type of life cycle found in terrestrial plants and some algae in which subsequent generations of individuals alternate between haploid and diploid organisms. This can be contrasted to sexual reproduction in animals, in which both haploid and diploid cells are found in every generation.

Detailed explanation-3: -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-4: -The land plant life cycle is known as a sporic (for sporic meiosis), dibiontic, or haplodiplontic life cycle. This type of life cycle exhibits alternation of generations. In other words, to complete a full circuit of its life cycle, a land plant must produce two different types of multicellular organisms.

Detailed explanation-5: -All plants alternate generations. There is an evolutionary trend from sporophytes that are nutritionally dependent on autotrophic (self-feeding) gametophytes to the opposite‐gametophytes that are dependent on autotrophic sporophytes.