alternation of generation वाक्य
उदाहरण वाक्य
मोबाइल
- In 2003, Stefan Pischinger took over the position as CEO within the framework of the upcoming alternation of generations.
- Land plants all have heteromorphic ( anisomorphic ) alternation of generations, in which the sporophyte and gametophyte are distinctly different.
- These species reproduce by shedding spores and have macroscopic alternation of generations, although some are homosporous while others are heterosporous.
- Microspores are structures that are part of the alternation of generations in many seedless vascular cryptogams, all gymnosperms and all angiosperms.
- "' Tilopteridales "'is an order of brown algae ( class Phaeophyceae ) with isomorphic alternation of generations.
- For plants and many algae, there are two multicellular stages, and the life cycle is referred to as alternation of generations.
- His career as a morphologist culminated in 1876 with the publication of a memoir on the alternation of generations in thallophytes and mosses.
- Alternation of generations is a plant thing, where both the diploid and haploid forms of the plant can live independently and divide.
- Seed producing plants, which include the angiosperms and the gymnosperms, have heteromorphic alternation of generations with large sporophytes containing much reduced gametophytes.
- The detailed study of reproductive structures in plants led to the discovery of the alternation of generations found in all plants and most algae.
- Wilhelm Hofmeister demonstrated that alternation of generations is a feature that unites plants, and published this result in 1851 ( see plant sexuality ).
- He came up with biophysical explanations on phenomena like phototaxis and geotaxis, and also discovered the alternation of generations in the plant life cycle.
- In those algae which have alternation of generations, the sporophyte and gametophyte are separate independent organisms, which may or may not have a similar appearance.
- In seed plants, which exhibit alternation of generations, the female and male parts are both included within the sporophyte sex organ of a single organism.
- As taller and more complex plants evolved, modifications in the alternation of generations evolved; in the Paleozoic era progymnosperms reproduced by using spores dispersed on the wind.
- Presently, the term " alternation of generations " is almost exclusively associated with the life cycles of plants, specifically with the alternation of haploid gametophytes and diploid sporophytes.
- The animal's rapid growth and this alternation of generations means that the population can build up rapidly when there is a plentiful food supply such as a ctenophores.
- He worked on a great many subjects, including cephalopods, but also in genetics, where he discovered the principle of the alternation of generations in some parasitic worms in 1842.
- The detailed study of reproductive structures in plants led to the discovery of the alternation of generations, found in all plants and most algae, by the German botanist Wilhelm Hofmeister.
- All land plants have a life cycle with an alternation of generations between a diploid sporophyte and a haploid gametophyte, but in all non-vascular land plants the gametophyte generation is dominant.
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