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  • Prothallus - Wikipedia
    In lichens, it refers to the region of the thallus that is free of algae The prothallus develops from a germinating spore It is a short-lived and inconspicuous heart-shaped structure typically 2–5 millimeters wide, with a number of rhizoids (root-like hairs) growing underneath, and the sex organs: archegonium (female) and antheridium (male)
  • Prothallium | Ferns, Gametophyte, Sporophyte | Britannica
    prothallium, the small, green, heart-shaped structure (gametophyte) of a fern that produces both male and female sex cells (gametes) The prothallium forms from a spore
  • Prothalli - definition of prothalli by The Free Dictionary
    (Botany) botany the small flat free-living gametophyte that bears the reproductive organs of ferns, horsetails, and club mosses It is either a green disc on the soil surface or it is colourless and subterranean
  • fern prothallus (of Thelypteris hispidula)
    From prothalli arise tiny, spherical structures called "antheridia," which produce male sperm, and tiny, flask-shaped "archegonia," which produce female eggs Often both antheridia and archegonia occur on the same prothallus
  • Prothalli Definition - General Biology I Key Term | Fiveable
    Prothalli are the gametophyte stage of seedless vascular plants, particularly ferns These small, heart-shaped structures are vital for reproduction as they produce gametes, which are necessary for fertilization and the development of the next sporophyte generation
  • Prothallus: Definition, Structure, Functions Examples in Biology
    Prothallium which is more commonly known as the prothallus can be defined as the gametophyte of the fern and other pteridophytes species The prothallium or prothallus is known to produce both male and female gametophytes of the plant
  • PROTHALLI definition and meaning | Collins English Dictionary
    the small flat free-living gametophyte that bears the reproductive organs of ferns, horsetails, and club mosses It is either a green disc on the soil surface or it is colourless and subterranean Collins English Dictionary Copyright © HarperCollins Publishers
  • What is Prothallus? Its Role in Plant Life Cycles - GNA
    Similar gametophyte structures, often referred to as prothalli, are also found in clubmosses and horsetails
  • Prothallus - Oxford Reference
    A small flattened multicellular structure that represents the independent gametophyte generation of clubmosses, horsetails, and ferns In some of these plants a single prothallus bears both male and female sex organs In others there are separate male and female prothalli
  • Prothallus - Definition, Function, Difference With . . . - Infinity Learn
    A prothallus is a small, flattened, green structure that grows from a spore of a fern or other seedless vascular plant It is the first stage of a fern’s life cycle, and is used for reproduction The prothallus has a stalk that attaches it to the soil, and tiny roots and leaves It produces spores, which grow into new prothalli





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