9.6 Anthoceropsida life cycle and characteristics of anthoceros | Kingdom plantae Fsc Biology

#hornwort, (division #Anthocerotophyta), also called horned liverwort, any of about 300 species of small nonvascular plants. Hornworts usually grow on damp soils or on rocks in tropical and warm temperate regions. The largest genus, #Anthoceros, has a worldwide distribution. Dendroceros and Megaceros are mainly tropical genera. Hornworts have an ancient lineage and are thought to be some of the earliest plants to have evolved on land.
Traditionally, hornworts have been classified as bryophytes, together with mosses (division Bryophyta) and liverworts (division Marchantiophyta). In some classification systems, hornworts have been grouped as horned liverworts in the subclass Anthocerotidae (class Hepaticae), class Anthocerotopsida, order Anthocerotales. However, molecular evidence suggests that hornworts have an evolutionary history distinct from both mosses and liverworts, and the plants are now placed in their own taxonomic division, Anthocerotophyta. The classification of the group remains controversial, and the number of hornwort families, genera, and species is under revision
Hornworts (division Anthocerotophyta), and liverworts (division Marchantiophyta)....
The plants’ gametophytes (sexual generation) are typically flattened, irregularly lobulated (thallose) structures that are usually less than 2 cm (0.8-1.6 inches) in diameter. The sporophyte, or asexual generation, forms a tapered cylinder. The sporophyte is dependent on the attached gametophyte for nutrients and water. Most sporophytes grow to up to 5 cm (2 inches). The thallus, or flat, gametophyte, usually lacks a midrib. The sexual organs are sunk into the upper surface of the thallus. Rhizoids (rootlike structures) on the undersurface anchor the plant. Cavities in the thallus sometimes contain colonies of the blue-green alga Nostoc.
Hornworts differ from other bryophytes in having a region of continuous growth at the base of the sporophyte, and a large irregular foot. The stalk that attaches the foot to the spore-bearing capsule in liverworts is absent in hornworts.
Hornworts reproduce sexually by means of waterborne sperm, which travel from the male sex organ (antheridium) to the female sex organ (archegonium). A fertilized egg in a female sex organ develops into an elongate sporangium, which splits lengthwise as it grows, releasing the spores that have developed within it. Elaters (elongated cells that aid in spore dispersal) are usually irregular and multicellular.

[@mansoorabbasi2633]

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[@imhuman7848]

Great lecture

[@awais6787]

good lecture 👍

[@eshuuuu93]

Good👍😊

[@MalikAdnan-d8e]

Great❤

[@Misbah-khan3tk3n]

Sir ye download krny ka bad Sahi sy nazr ni ata qn ? But ap ka lacture mashallah buht acha hota h or samgh bhi at h ❤

[@Imtananalijut195]

Very Nice

[@yousafsahir9450]

Nice 👍

[@fatimaawan307]

Very well explained 👌👌

[@abdulrehmansaeed7275]

Assalam u Alikum sir.... Apne kha tha bsc k lectures upload krege? I'm waiting

[@Muhammad-kn5df]

Great👍 💕

[@AtibasHassan]

Mashallah

[@physicswithbilalhassan5339]

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[@kohistancouchingacademy7649]

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[@SLIM_FUN_07]

Alternation of generation waly topic ka link snd kr dyn

[@physicswithbilalhassan5339]

Mashallah sit

[@arshadali4073]

Sir zabar dast

[@sitaramalik9892]

Seta or capsule?

[@hammad7159]

sir horn worts ma gametophte dominant hai ka sporophyte

[@irtisamsbiology]

Sporophyte

[@hammad7159]

Magar start ma to gametophyte ho gi

[@khadijakhadija9530]

Sounds good

[@Florfka]

Sir ya sporophyte 2n ha jab is mn meiosis ho gi to is mn sa sirf aik spore bnana chahia "n" wala yahn itna zyada spores ku bn rha hn.

[@Muhammadramzan-ru4gn]

Sprophyte in it have sprophyte 2n mother cell in large amount that after meiosis produce a large amount haploid spore

[@muzammalnawaz1358]

Nice

[@muhammadusama-kk7zl]

Sir you are from university of Sargodha ... I'm also from there!

[@irtisamsbiology]

Yes i was

[@sitaramalik9892]

Sir foot kiya hota hai

[@aqsafahad3647]

Sir dominant gametophyte hai ?

[@greatestpakistan2889]

I think sporophyte generation is dominant in these group of plants

[@MsubhanSubhan-x9t]

Assalamo Alaikum sir. What is foot

[@greatestpakistan2889]

I think part of sporophyte

[@niyazkhan5520]

👍

[@umermadni294]

♥️

[@ma-gt5pl]

Anthoceros ma seta nae hota

[@adeshmishra1328]

Are you from Pakistan..?

[@irtisamsbiology]

Yes bro

[@adeshmishra1328]

@@irtisamsbiology Which University

[@irtisamsbiology]

@@adeshmishra1328 university of Sargodha

[@niyazkhan5520]

Pleas poshto laccher

[@chAbdullah-nq4eu]

Awful❤❤

[@MsubhanSubhan-x9t]

Great lecture