Selaginella – Morphology, Anatomy and Reproduction
2024年10月8日 · Selaginella species exhibit remarkable diversity in their habitats, being widely distributed across both tropical and temperate regions. The genus, comprising. ... Strobilus: The strobilus is a reproductive structure formed by the aggregation of ligulate sporophylls at the apex of the branches of the stem. The length of the strobilus varies ...
Selaginella: Habitat, Features and Reproduction - Biology …
Strobilus: All the species of Selaginella forms strobili or cones. Generally strobili occur terminally on side branches, but in some species (e.g., S. patula and S. cuspidata), the apical meristem of the cone may continue meristematic activity producing foliage (vegetative) leaves and, therefore, produces a shoot with sporophylls (sporangium ...
Anatomy of Selaginella (With Diagram) - Biology Discussion
In this article we will discuss about the anatomy of selaginella. Cut thin transverse sections of stem, root, rhizophore and root by inserting the material in pith, stain them separately in safranin-fast green combination, mount in glycerine and observe under microscope.
Selaginella: Habitat, Reproduction and Life Cycle - Biology …
Strobilus: It is a reproductive structure formed by the aggregation of ligulate sporophylls at the apex of the branches of stem. The length of the strobilus varies from 1/4 inch to 2-3 inches in different species.
Selaginella (Spikemoss): Morphology, Reproduction, Uses
2024年10月3日 · Strobilus of Selaginella. The strobilus is the sporangia-bearing structure of the sporophyte. The sporangia arising from the axils of leaves are called sporophylls. The sporangia in Selaginella are of two types- megasporangia and microsporangia. The sporophylls bearing megasporangia are called megasporophylls and those bearing microsporangia ...
6.1.2: Selaginella - Biology LibreTexts
Members of the genus Selaginella are heterosporous, meaning they produce two different types of spores. Figure \(\PageIndex{1}\): In the first image, there are liquid-preserved strobili of Selaginella, showing mega- and microsporangia through translucent sporophylls. The second image is a cross section through a strobilus.
Take a moment to look over the living plants of Selaginella in the lab. These are members of the spreading life form (Figure 1). Identify the microphylls and strobili. Now look at the shoots near the surface in the pot to find the peculiar roots of Selaginella. These roots …
Strobilus: All the species of Selaginella forms strobili or cones. Generally strobili occur terminally on side branches, but in some species (e.g., S. patula and S. cuspidata), the apical meristem of the cone may continue meristematic activity producing …
Selaginella morphology. ( A ) The diploid sporophyte body. Bar, …
Because Selaginella is a member of a vascular plant lineage that is sister to the euphyllophytes, we used comparative and phylogenetic approaches to identify gene origins and expansions...
The strobilus of Selagine.la.-Miss GERTRUDE MITCHELL32 has recorded some general studies of the strobilus of Selaginella, which fill up certain gaps in our knowledge, and "confirm or controvertstatements" of other investigators.
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