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Plant Reproduction

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Pregunta:

Talk about digenic cycle

Autor: H K



Respuesta:

AKA haplodiplotonic In some protists and some fungi as well as in plants, the life cycle is, by contrast, multigenerational, characterized by an alternation of generations - it includes both a multicellular sporophyte (diploid generation) and a multicellular gametophyte (haploid generation). Life cycles that present two phases are called digenetic (also known as diplobiontic, diplohaplontic, haplodiplontic, or dibiontic):  A diploid (2n) sporophyte produce through meiosis, haploid (n) cells, called spores. The germination of a haploid spore undergoes mitosis and grows into a gametophyte (gamete-producing organism). The gametophyte reaches maturity and produces haploid (n) gametes by mitosis, which following fertilization, grow into a zygotic sporophyte (spore-producing organism).


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H K
H K