Hornwort - Wikipedia
Hornworts are a group of non-vascular Embryophytes (land plants) constituting the division Anthocerotophyta (/ ˌænθoʊˌsɛrəˈtɒfətə, - təˈfaɪtə /). The common name refers to the elongated horn-like structure, which is the sporophyte.
Hornworts: Structure, Life Cycle, Examples, Importance - Microbe …
2024年6月11日 · They are called as “hornworts” because the sporophytes are elongated cylindrical structure that resembles horns. The class Anthocerotopsida embraces a small group of bryophytes and most popularly they are known as hornworts.
The hornworts: morphology, evolution and development
2020年8月13日 · The hornworts are the smallest and least diverse clade within bryophytes, consisting of c. 220 species (Söderström et al., 2016) that are geographically widespread primarily in tropical areas (Villarreal et al., 2014).
Anthocerotophyta (Hornworts) - The Biology Primer
Hornworts are a group of bryophytes, or non-vascular plants, comprising the division Anthocerotophyta. The common name refers to the elongated horn-like structure, which is the sporophyte. The flattened, green plant body of a hornwort is the gametophyte plant.
An Introduction to Hornworts - In Defense of Plants
2018年12月16日 · The horn itself is an amazing structure. Whereas the outside layers of tissue are merely structural, the internal tissues differentiate into two different types - spores and pseudo-elaters. Pseudo-elaters expand and contract as humidity fluctuates so as the sporophyte splits to release the spores, the pseudo-elaters dehydrate and snap like tiny ...
Hornwort - Characteristic Features of Hornwort - BYJU'S
The main plant body is thallus-like and lacks true roots, stem and leaves. Its flattened body is haploid and produces gametes. Thus, it is known as a gametophyte. Each thallus consists of a chloroplast that aids in the photosynthesis process. Most hornworts have a unique feature called pyrenoids. It helps in the fixation of photosynthetic carbon.
2.5.2.1: Anthocerotophyta - Biology LibreTexts
Hornworts have a flattened thalloid gametophyte, out of which grow their long photosynthetic sporophytes (Figure 2.5.2.1.1 2.5.2.1. 1), composed of a sporangium with a columella and pseudoelaters. The sporophyte grows from a basal meristem, with the oldest tissues at the apex.
Anthoceros: Distribution, Structure, Reproduction - Biology Learner
2022年7月31日 · Structure of Sporophyte. The mature sporophyte of Anthoceros is an elongated structure. They usually grow in clusters from the dorsal surface of the thallus. The sporophyte is about 2 to 15 cm long and appears like a horn or bristle; hence, the species are commonly called hornworts. The young sporophyte is green in colour.
Virtual Lab of Bryophytes - Introduction - The Chinese University …
Like other bryophytes, the sporophyte of hornworts remains attached to the gametophyte for nutrient and attachment. Yet the young green needle cylindrical structure is photosynthetic and grows continuously throughout its life from a basal intercalary meristem.
Among land plants, hornworts possess a bewildering array of structural features that are algal-like (chloroplast structure and biochemistry), liver-wort-like (antheridial development and structure, apical cell architec-ture), moss-like (columella, stomates), and yet others that suggest affinities with seedless vascular plants (stomates, sunken g...
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