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Buxbaumia viridis, also known as the green shield-moss, is a rare bryophyte found sporadically throughout the northern hemisphere. [1] [2] The gametophyte of this moss is not macroscopically visible; the large, distinct sporophyte of B. viridis is the only identifying structure of this moss. [3]
The spores are dispersed through a catapult-like system, flinging the spores out briefly at up to 10m/s. This is caused by the gradual build up of a high negative pressure (200-300 atmospheres) within annulus cells from water loss. [1] As these cells lose water, they shrink, and are designed to inwardly bend on the outer face of the annulus.
In biology, a spore is a unit of sexual (in fungi) or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. [1] Spores form part of the life cycles of many plants , algae , fungi and protozoa . [ 2 ]
Though bryophytes were considered a paraphyletic group in recent years, almost all of the most recent phylogenetic evidence supports the monophyly of this group, as originally classified by Wilhelm Schimper in 1879. [8] The term bryophyte comes from Ancient Greek βρύον (brúon) ' tree moss, liverwort ' and φυτόν (phutón) ' plant '.
The Illinois General Assembly advanced 186 bills out over a three-day stretch. Here are 5 we're keeping our eyes on. Illinois lawmakers recently passed 186 bills out of committee.
The species releases spores through an 'air-gun' mechanism, launching them 15 cm (5.9 in) high at speeds up to 3.6 m (12 ft) per second (about 8 miles per hour). This mechanism, combined with the spores' slow settling speed, enables effective wind dispersal over long distances. [22] When the spores land, they can start growing immediately.
SPRINGFIELD, Ill. — Time to study up, Illinois. When the clock hits midnight on New Year’s Day, 293 new state laws will take effect. Those include some of the defining bills of the 2024 ...
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