Web03. maj 2024. · In Lycopodium, the gametophyte grows from a homospore and is bisexual, producing both antheridia and archegonia. Figure 6.1.1. 1: A preserved Lycopodium … The lycophytes, when broadly circumscribed, are a group of vascular plants that include the clubmosses. They are sometimes placed in a division Lycopodiophyta or Lycophyta or in a subdivision Lycopodiophytina. They are one of the oldest lineages of extant (living) vascular plants; the group contains extinct plants that have been dated from the Silurian (ca. 425 million years ago…

Equisetopsida plant taxon Britannica

WebA life cycle which there is both a multicellular diploid form, the sporophyte, and a multicellular haploid form, the gametophyte; characteristic of plants and some algae *Distinguished by haploid and diploid stages that are both multicellular 5 Steps of Alternation of Generations 1) The Gametophyte produces haploid gametes by mitosis WebThe life cycles of members of the three groups vary. The lycopods are homosporous and the spores give rise to bisexual gametophytes, which in some species develop … female scottish wedding attire

Phylum Lycophyta: Club Mosses and More - CliffsNotes

WebThe ligule was a characteristic feature of the extinct giant lycophytes such as Lepidodendron. quillwort. Isoetes species have a plant body that is relatively small, … WebLife cycle Horsetails, like other vascular plants, display an alternation of generations: an asexual phase, represented by a sporophyte (the horsetail plant), and a sexual phase, the gametophyte, an inconspicuous, delicate, green plant. Each year, many gametophytes are initiated from spores, but apparently very few produce sporophytes in nature. Web†Order Lepidodendrales Extinct tree lycophytes, therefore capable of secondary growth; heterosporous, with some strobili (cones) forming seedlike structures; about 6 genera, … definitions of chemical reactions