Search - 6.2.2: Ferns - Biology LibreTexts
Ferns have heart-shaped gametophytes. Sporophytes produce megaphylls in the form of fronds that emerge in a curled form (fiddlehead). Spores are produced in clusters called sori.
21.4: Ferns (Class Polypodiopsida) - Biology LibreTexts
Label the bolded structures in the life cycle diagram. Obtain a prepared slide of a sorus. A sorus is a cluster of sporangia, often protected by an umbrella-like structure called the indusium as the spores mature. Each sporangium is lined by an inflated strip of cells called an annulus.
Fern - Spore, Sorus, Reproduction | Britannica
Sep 19, 2024 · sori Examples of sori and arrangements of sporangia in various species of ferns. (more) Hand in hand with the reduction in size of single sporangia are seen more and more complex aggregations of sporangia known as sori.
Fern Life Cycle - Science Notes and Projects
May 28, 2023 · Fern fronds house a fascinating feature: sporangia. Sporangia are tiny cases called sori found on the underside of fronds that produce and contain spores. These spores are the means by which ferns propagate. Understanding Alternation of Generations. The fern life cycle involves alternation of generations.
16.3C: Fern Life Cycle - Biology LibreTexts
Dec 31, 2020 · Figure 16.3.3.1 Fern life cycle. The plant we recognize as a fern is the diploid sporophyte generation. Sori form on the fronds. Each contains many sporangia mounted on stalks. Within each sporangium, the spore mother cells undergo meiosis producing four haploid spores each. When the humidity drops,
Basic Fern Identification - TrekOhio
Jun 28, 2014 · These structures are known as sori (pronounced “SORE-eye”; the singular is sorus, pronounced “SORE-us”). The sori grow on the underside of a frond. Observing the location and appearance of these sori is a big help in identifying the fern’s species.
1. Look closely at a fertile leaf of one of the Cyrtomium plants in the lab (Fig. 16). The sori are abaxial in several rows on the undersurface of the leaf and protected (at least when young) by a tiny outgrowth of the leaf by a tiny umbrella-shaped outgrowth of the leaf called an indusium, 22.
Ferns, Spores, and Plant Reproduction | Smithsonian National …
fern, plant, reproduction, seed-free, spore, dispersal. Key Concepts. Reproduction of plants; Alternation of generations; Seeds and spores; Characteristics of ferns; Technology used by botanists; Resource Types
Notice the sori are not a single structure, as appears to the eye from a distance, but instead a dense cluster of spore bodies or sporangia. When the sporangia are ripe and filled with mature spores, they eject the spores under pressure into the …
Ferns under the microscope — Science Learning Hub
Feb 29, 2012 · use a light microscope to view fern reproductive structures. identify some of the fern reproductive structures (sori, sporangia, indusium, spores) discuss the differing amounts of detail they are able to see with the naked eye and with increased powers of magnification. Download the Word file for:
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