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metagenesis    
n. 世代交替

世代交替

metagenesis
n 1: alternation of sexual and asexual generations [synonym:
{metagenesis}, {digenesis}]


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  • Alternation of generations - Wikipedia
    Alternation of generations (also known as metagenesis or heterogenesis) [1] is the predominant type of life cycle in plants and algae In plants both phases are multicellular: the haploid sexual phase – the gametophyte – alternates with a diploid asexual phase – the sporophyte
  • METAGENESIS Definition Meaning - Merriam-Webster
    The meaning of METAGENESIS is alternation of generations in animals; especially : regular alternation of a sexual and an asexual generation
  • Alternation of generations | Definition Examples | Britannica
    Alternation of generations, the alternation of a sexual phase and an asexual phase in the life cycle of an organism
  • Metagenesis - Encyclopedia. com
    metagenesis The occurrence, during the life cycle of an organism, of two types of individual, both diploid, both of which reproduce, one sexually and the other asexually The term is sometimes used loosely (but incorrectly) as a synonym for the alternation of generations
  • Define Metagenesis. Give a suitable example - Vedantu
    Metagenesis is shown by organisms belonging to the phylum Cnidaria and some algae, fungi, mosses, ferns, and seed plants Cnidarians exhibit two forms in their life cycle - the polyp form and medusa form Polyps are the sporophytes and produce medusae asexually, while the medusae forms are the gametophytes which produce the polyps sexually
  • metagenesis | Energy Glossary
    Metagenesis occurs at temperatures of 150 to 200 degC [302 to 392 degF] At the end of metagenesis, methane, or dry gas, is evolved along with nonhydrocarbon gases such as CO 2, N 2, and H 2 S, as oil molecules are cracked into smaller gas molecules
  • Phylum Cnidaria: Metagenesis | Study Score - Study and score
    Alternation of generation is also known as metagenesis It is a phenomenon whereby, in the life history of an organism, a diploid asexual phase and a haploid sexual phase regularly alternate with each other This type of true alternation of generation is present in plants like mosses and ferns
  • Metagenesis - definition of metagenesis by The Free Dictionary
    Define metagenesis metagenesis synonyms, metagenesis pronunciation, metagenesis translation, English dictionary definition of metagenesis n Alternation of generations between sexual and asexual forms met′a·ge·net′ic adj American Heritage® Dictionary of the English Language, Fifth Edition
  • What is metagenesis? What are the other names of this process . . .
    Metagenesis is the type of life cycle in which there are two different forms of individuals of the same species, one haploid and the other diploid In one of these stages gametogenesis occurs and fecundated gametes give birth to the zygote that then develops into the other form





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