WebStrobilus of Lycopodium: At left is a picture of the clubmoss Lycopodium obscurum showing the habit of the plant and position of the strobili, or cones. You can also see an enlarged longitudinal section through one strobilus. The tissues have been stained to better show internal detail. You may click on the image to view an enlargement. A strobilus (plural: strobili) is a structure present on many land plant species consisting of sporangia-bearing structures densely aggregated along a stem. Strobili are often called cones, but some botanists restrict the use of the term cone to the woody seed strobili of conifers. Strobili are characterized by a … See more Some members of both of the two modern classes of Lycopodiophyta (Lycopodiopsida and Isoetopsida) produce strobili. In all cases, the lateral organs of the strobilus are microphylls, bearing sporangia. … See more It is likely that strobili evolved independently in most if not all these groups. This evolutionary convergence is not unusual, since the form of a strobilus is one of the most … See more The word strobilus is related to the ancient Greek strobilos = whirlwind. The Hebrew word for conifer cone, itstrubal, is an ancient borrowing from the Greek. See more The single extant genus of Equisetophyta, Equisetum, produces strobili in which the lateral organs are sporangiophores. Developmental evidence and comparison with fossil members … See more With the exception of flowering plants, seed plants produce ovules and pollen in different structures. Strobili bearing microsporangia are called microsporangiate strobili or pollen cones, and those bearing ovules are megasporangiate … See more
Chapter 22: Introduction to Seed Plants: Gymnosperms
WebStrobili or cones are found in: A Pteris B Marchantia C Equisetum D Salvinia Medium NEET Solution Verified by Toppr Correct option is C) Strobili or cones are the dense and … WebYou may recall the term strobilus (plural = strobili) describes a tight arrangement of sporophylls around a central stalk, as seen in pine cones. Some seeds are enveloped by sporophyte tissues upon maturation. ... South America, and Southeast Asia, and include trees, shrubs and vines. Welwitschia is found in the Namib desert, and is possibly ... mario rn
Conifer cone - Wikipedia
WebMay 4, 2024 · A strobilus is composed of leaves called sporophylls that bear sporangia (Figure 6.3.1. 4 ). Meiosis occurs within the sporangia to produce haploid homospores. … WebDendrolycopodium hickeyi (synonym Lycopodium hickeyi) known as Hickey's tree club-moss or Pennsylvania clubmoss, is a North American species of clubmoss in the family Lycopodiaceae.It is native to eastern and Central Canada (from Newfoundland to Ontario with isolated populations in Saskatchewan) and the eastern and north-central United … WebStrobilanthes kunthiana, of the Bear's Britches Family (Acanthaceae) and known as Kurinji or Neelakurinji in Malayalam and Tamil and Gurige in Kannada is a shrub that is found in the shola forests of the Western Ghats in Kerala, Karnataka and Tamil Nadu. daneil campbell