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A sporophyte (/spɔːroʊˌfaɪt/) is the diploid multicellular stage in the life cycle of a plant or alga. It develops from the zygote produced when a haploid egg cell is fertilized by a haploid sperm and each sporophyte cell therefore has a double set of chromosomes, one set from each parent.Microorganisms are simple, single celled organisms that can be found all around the world. They are largely composed of the members of the plant kingdom, fungi, bacteria and protozoa. As such, they are only visible under the microscope. However, as is the case with some species, microorganisms may...1. External structure:- The sporophyte, i.e., the plant body is well differentiated into - stem, leaves and roots -. Stem - The stem is underground, horizontal and much branched, which often penetrates more than a The innermost layer of the cortex is the single layered endodermis with casparian strips.Differentiation is the process by which a cell takes on a specific identity and function in the plant body. Vascular plant sporophytes have two major categories of meristems that contribute to growth: apical and lateral. However, other types of meristems may contribute to growth of stems and...The sporophyte structure is dependent upon the gametophyte of nourishment because only the gametophyte is capable of photosynthesis. The fertilized egg develops into a seed, which is the beginning of a new sporophyte generation. The female gametophyte generation consists of the...

What are Microorganisms? - Different Types found in Pond Water etc

This is a Most important question of gk exam. Question is : The sporophytes which are differentiated into roots, stem and true leaves constitutes the plants of , Options is : 1. hepaticopsida, 2. anthoceropsida, 3.lycopsida, 4. bryopsida, 5. NULL.The structure of a fern. Ferns have 3 major parts - the rhizome, the fronds and the reproductive structures New fronds are produced from the rhizome. They are tightly coiled into a spiral (called a fiddlehead or koru) The leafy fern plants we see in the bush that produce spores are sporophytes.The cap like structure on the capsule of the sporophyte generation in a bryophyte is the operculum. In fern, for example, the fern itself is the sporophyte. This organism produces spores that fall to the substrate below and grow into a separate organism called a gametophyte.sporophtes are the plants that produce asexual spores the structures into which a sporophyte differentiates are Foot, seta, and capsule so correct option is A hope it helps.

Equisetum - classification, structure of sporophyte, reproduction...

42 Brown Algae Structure of brown algae most species have thalli that are well differentiated into holdfast, stipe and blade bladders—gas-filled structures found on 45 Brown Algae Reproduction in brown algae usual life cycle, i.e., alternation of generations between a sporophyte (often perennial)...noun sporophyte in certain plants and algae, the spore-bearing generation that is diploid and reproduces by spores: the sporophyte generation begins with the fertilized egg and ends with meiosis 0. what are the structures into which a sporophyte differentiates?The plant body is differentiated into stem like axis, leaf like structures and root like rhizoids. Rhizoids are multicellular and branched. Sporophyte is attached to the photosynthetic gametophyte and is differentiated into foot (by which it is attached to gametophyte), seta and at the tip is the capsule...Vascular plants switched to sporophyte-dominated life cycles, colonized drier habitats and were no In a few plant tissues, the protoplasm is not partitioned into cells; instead, numerous nuclei are An example of such a multinucleate structure (coenocyte) is the endosperm in its early stages of...Structure of sporophvte and spore development: The sporophyte is differentiated into a foot, seta and capsule. After meiosis, spores are produced within the capsule. What is the nature of sporophyte and gametophyte? Sporophytic generation is represented only by the one-celled zygote.

Jump to navigation Jump to go looking Young sporophytes of the commonplace moss Tortula muralis. In mosses, the gametophyte is the dominant generation, while the sporophytes encompass sporangium-bearing stalks growing from the guidelines of the gametophytes Sporophytes of moss all through spring

A sporophyte (/spɔːroʊˌfaɪt/) is the diploid multicellular level in the existence cycle of a plant or alga. It develops from the zygote produced when a haploid egg cell is fertilized by means of a haploid sperm and each and every sporophyte cellular due to this fact has a double set of chromosomes, one set from every guardian. All land plants, and most multicellular algae, have existence cycles in which a multicellular diploid sporophyte phase alternates with a multicellular haploid gametophyte section. In the seed plants, the largest groups of which are the gymnosperms and flowering plants (angiosperms), the sporophyte phase is more distinguished than the gametophyte, and is the familiar inexperienced plant with its roots, stem, leaves and cones or plants. In flowering vegetation the gametophytes are very contracted, and are represented through the germinated pollen and the embryo sac.

The sporophyte produces spores (therefore the identify) through meiosis, a procedure often referred to as "reduction division" that reduces the choice of chromosomes in each and every spore mother mobile by part. The ensuing meiospores develop into a gametophyte. Both the spores and the ensuing gametophyte are haploid, that means they only have one set of chromosomes. The mature gametophyte produces male or female gametes (or each) via mitosis. The fusion of female and male gametes produces a diploid zygote which develops into a new sporophyte. This cycle is referred to as alternation of generations or alternation of phases.

In flowering crops, the sporophyte incorporates the whole multicellular frame except for the pollen and embryo sac

Bryophytes (mosses, liverworts and hornworts) have a dominant gametophyte phase on which the adult sporophyte relies for vitamin. The embryo sporophyte develops by cell department of the zygote within the feminine intercourse organ or archegonium, and in its early development is due to this fact nurtured by the gametophyte.[1] Because this embryo-nurturing function of the existence cycle is common to all land vegetation they are known collectively as the embryophytes.

Cleistocarpous sporophyte of the moss Physcomitrella patens

Most algae have dominant gametophyte generations, but in some species the gametophytes and sporophytes are morphologically an identical (isomorphic). An independent sporophyte is the dominant shape in all clubmosses, horsetails, ferns, gymnosperms, and angiosperms that have survived to the provide day. Early land vegetation had sporophytes that produced similar spores (isosporous or homosporous) however the ancestors of the gymnosperms advanced advanced heterosporous existence cycles in which the spores generating male and female gametophytes had been of different sizes, the feminine megaspores tending to be better, and fewer in number, than the male microspores.[2]

During the Devonian length several plant teams independently evolved heterospory and therefore the habit of endospory, in which the gametophytes broaden in miniaturized shape inside of the spore wall. By contrast in exosporous vegetation, together with fashionable ferns, the gametophytes ruin the spore wall open on germination and develop outside it. The megagametophytes of endosporic vegetation reminiscent of the seed ferns advanced inside the sporangia of the father or mother sporophyte, producing a miniature multicellular feminine gametophyte whole with feminine intercourse organs, or archegonia. The oocytes have been fertilized in the archegonia by means of free-swimming flagellate sperm produced by windborne miniaturized male gametophytes in the form of pre-pollen. The ensuing zygote advanced into the next sporophyte generation while nonetheless retained inside of the pre-ovule, the unmarried massive female meiospore or megaspore contained in the modified sporangium or nucellus of the parent sporophyte. The evolution of heterospory and endospory have been amongst the earliest steps in the evolution of seeds of the sort produced through gymnosperms and angiosperms lately. The rRNA genes turns out to escape international methylation equipment in bryophytes, unlike seed crops.

References

^ Ralf Reski(1998): Development, genetics and molecular biology of mosses. In: Botanica Acta. Bd. 111, S. 1-15. ^ .mw-parser-output cite.quotationfont-style:inherit.mw-parser-output .quotation qquotes:"\"""\"""'""'".mw-parser-output .id-lock-free a,.mw-parser-output .quotation .cs1-lock-free abackground:linear-gradient(transparent,clear),url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")appropriate 0.1em center/9px no-repeat.mw-parser-output .id-lock-limited a,.mw-parser-output .id-lock-registration a,.mw-parser-output .quotation .cs1-lock-limited a,.mw-parser-output .quotation .cs1-lock-registration abackground:linear-gradient(transparent,clear),url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em heart/9px no-repeat.mw-parser-output .id-lock-subscription a,.mw-parser-output .citation .cs1-lock-subscription abackground:linear-gradient(transparent,clear),url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")appropriate 0.1em middle/9px no-repeat.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:assist.mw-parser-output .cs1-ws-icon abackground:linear-gradient(clear,clear),url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em heart/12px no-repeat.mw-parser-output code.cs1-codecolour:inherit;background:inherit;border:none;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintshow:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em.mw-parser-output .quotation .mw-selflinkfont-weight:inheritBateman, R.M.; Dimichele, W.A. (1994). "Heterospory - the most iterative key innovation in the evolutionary history of the plant kingdom". Biological Reviews of the Cambridge Philosophical Society. 69 (3): 345–417. doi:10.1111/j.1469-185x.1994.tb01276.x. P. Kenrick & P.R. Crane (1997) The beginning and early evolution of crops on land. Nature 389, 33-39. T.N. Taylor, H. Kerp and H. Hass (2005) Life history biology of early land crops: Deciphering the gametophyte phase. Proceedings of the National Academy of Sciences 102, 5892-5897. P.R. Bell & A.R. Helmsley (2000) Green vegetation. Their Origin and Diversity. 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Rosselló, and Aleš Kovařík. "Unique Epigenetic Features of Ribosomal RNA Genes (RDNA) in Early Diverging Plants (Bryophytes)." Frontiers in Plant Science 10 (May 2019). https://doi.org/10.3389/fpls.2019.01066. Retrieved from "https://en.wikipedia.org/w/index.php?title=Sporophyte&oldid=1011347457"