Observe a mature fern frond. Locate the rachis, pinnae, and sori. 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 ...

2024年10月3日 · Ferns View a live specimen of a fern. Label the following structures: sporophyte, sori, fiddlehead (if present). A. operculum B. sporangium (capsule) C. seta

Fern sporophytes are composed of megaphylls, often pinnately compound fronds that emerging as fiddleheads in the spring. Sporangia are produced in clusters called sori (sorus, singular) on the fronds.

2022年8月19日 · Label a fern gametophyte and sporophyte. The Polypodiopsida includes the horsetails and ferns. These plants produce leaves with branching veins of vascular tissue called megaphylls. Like the lycophytes, asexual reproduction …

The young fronds sprout directly from the rhizomes. Some rhizomes in tree ferns, such as a king fern or a crown fern, can grow into a tree-like solid stem that gives rise to a tuft of fronds. Sporangia. The sporangia (singular sporangium) are found in clusters called sori (singular sorus) underneath the fronds. They are often brown, black, and ...

2025年2月3日 · In ferns the dispersal of spores in ferns takes place through the annulus on the plant, a ring-like structure on the sporangium. In ferns the gametophyte depends on the sporophyte and both male and female gametophytes are contained in the same structure.

The narrow redish/brown segmented body with well defined birefringence when viewed with cross polarized light is characteristic of fern sporangium. The birefringence is much higher than insect carapace and a bit lower than most cellulosic plant parts.

2020年4月20日 · Here we present a study on the spores and sporangia using both light and scanning electron microscopy in Struthiopteris and Spicantopsis, using samples of all their species, and almost all their varieties. We provide full morphological descriptions of the spores and sporangia of all these taxa.

When you flip the mature blade of a fern over to observe the underside (abaxial side), you often find some brown patches. Each patch is a sorus (plural form: sori) which is a cluster of sporangia. The sorus is sometimes covered and protected by an indusium, a flap-like tissue arising from the leaf blade. In addition to its protective function ...

2010年9月24日 · The fern body consists of 3 major parts – the rhizome, the fronds and the sporangia. This interactive explores the sporangia – click on the labels for more information. Find out more about the upper layer of ferns in this related interactive.