Sorus - Wikipedia
A sorus (pl.: sori) is a cluster of sporangia (structures producing and containing spores) in ferns and fungi. A coenosorus (pl.: coenosori) is a compound sorus composed of multiple, fused sori. Etymology. This Neo-Latin word is from Ancient Greek …
Sorus | Ferns, Spores & Reproduction | Britannica
Sorus, in botany, brownish or yellowish cluster of spore-producing structures (sporangia) usually located on the lower surface of fern leaves. A sorus may be protected during development by a scale or flap of tissue called an indusium.
Sorus Definition & Meaning - Merriam-Webster
: a cluster of plant reproductive bodies: such as. a. : a cluster of sporangia on the underside of a fertile fern frond. b. : a mass of spores bursting through the epidermis of the host plant of a parasitic fungus. c. : a cluster of gemmae on the thallus of a …
Fern - Spore, Sorus, Reproduction | Britannica
2024年9月19日 · Fern - Spore, Sorus, Reproduction: Sori are complex aggregations of sporangia. The indusium protects the sporangial cluster. About one-third of fern species have paraphyses. The chromosome base numbers range from approximately 20 to 70. Ferns overall have relatively high levels of polyploidy, but these are all of relatively recent origin.
Sorus - Explanation, Indusium, Evolution and FAQs - Vedantu
In Botany, Sorus, (sori in plural), is a yellow-brown cluster of structures that produce spores (sporangia). It is found usually on the lower surface of the leaves of ferns. Sorus is sometimes surrounded by a secondary external layer in some varieties of fungi and lichens.
Search - 6.2.2: Ferns - Biology LibreTexts
A sorus (plural, sori) 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 .
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.
Soral evolution in ferns | PPT - SlideShare
2018年8月7日 · The document summarizes the types and positions of sori (clusters of sporangia) in ferns. There are three main types of sori: simplices where all sporangia mature simultaneously; gradatae where sporangia mature basipetally from distal to proximal ends; and mixtae which are a mixed aggregation of young and old sporangia.
sorus - Dictionary of botany
sorus. A reproductive structure made up of a collection of sporangia. Sori are usually prominent on the undersurface of fertile fern fronds, where they are often borne in a regular pattern, each sorus being covered by an * indusium.
Sorus – Explanation, Indusium, Evolution and FAQs - Infinity Learn
A sorus (plural: sorae) is a cluster of sporangia, the organ that produces spores in many ferns and other plants. The word “sorus” is also used to describe the single sporangium of some mosses and liverworts.