
	Where results make sense

Topic: Sporophyte

Related Topics

Gametophyte

Vascular plant

Diploid

Ploidy

Fern ally

Gymnosperm

Fern

Haploid

Zygote

Plant

Spore

Immune system

Conifer

Alternation of generations

	Biological Diversity 5
		Plants have an alternation of generations: the diploid spore-producing plant (sporophyte) alternates with the haploid gamete-producing plant (gametophyte), as shown in Figure 3.
		The diploid sporophyte grows from and is nourished by the gametophyte.
		Vascular plants tend to be larger and more complex than bryophytes, and have a life cycle where the sporophyte is more prominent than the gametophyte.
	www.estrellamountain.edu /faculty/farabee/biobk/BioBookDiversity_5.html (4109 words)

	Olympus MIC-D: Brightfield Gallery - Fern Sporophyte
		The asexual form, or sporophyte form, is represented by the fern plant as it is commonly known and is diploid (2N).
		Relative to the familiar sporophytes, the fern gametophytes are small and inconspicuous.
		Commonly in primitive vascular plants, the haploid gametophyte phase occurs in a manner that allows it to be surrounded by tissues of the parent sporophyte, such as within cones, seeds, or pollen grains.
	www.olympusmicro.com /micd/galleries/brightfield/fernyoungsporophyte.html (345 words)

	Alternation of generations - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-15)
		The life cycle of organisms with so-called "alternation of generations" is characterized by each phase consisting of two separate, free-living organisms: a gametophyte thallus or plant, which is genetically haploid, and a sporophyte thallus or plant, which is genetically diploid.
		All plants have diploid sporophyte and haploid gametophyte stages that are multicellular, and the differences between plant groups are in the relative sizes, forms, and trophic abilities of the gametophyte or sporophyte forms, as well as the level of differentiation in the gametophytes.
		The haploid prothallus does not resemble the sporophyte, and as such ferns and their allies have a heteromorphic alternation of generations.
	en.wikipedia.org /wiki/Alternation_of_generations (915 words)

	Sporophyte Encyclopedia Article @ NaturalResearch.org (Natural Research) (Site not responding. Last check: 2007-10-15)
		In plants that undergo alternation of generations, a sporophyte is the structure, or phase of life, that contains a total complement of chromosomes:
		An example of an exception is when a diploid and haploid gamete fuse, resulting in a triploid sporophyte (this will usually be sterile, as dividing three sets of chromsomes into two halves causes complications).
		The sporophyte is the commonly known form in ferns, gymnosperms, and angiosperms (flowering plants).
	www.naturalresearch.org /encyclopedia/Sporophyte (251 words)

	Concepts of Biology
		The sporophyte and gametophyte phases may be completely separate (as in ferns), or the sporophyte may be "parasitic" (nutritionally dependent) on the gametophyte (as in mosses) or the gametophyte may be parasitic on the sporophyte (as in flowering plants).
		In mosses the dominant phase is the gametophyte and the sporophyte is parasitic on it.
		In angiosperms, the sporophyte is the dominant phase and the gametophyte is highly reduced and in the case of the female parasitic on the sporophyte.
	employees.csbsju.edu /ssaupe/biol116/Botany/plant-repro-lec.htm (2674 words)

	Anthophyta, Laboratory Notes for BIO 1003 (Site not responding. Last check: 2007-10-15)
		Recall that in bryophytes and pterophytes the sporophyte and gametophyte are distinct phases in the life cycle; sporophytes are diploid (2n) and gametophytes haploid (n); sporophytes produce haploid spores by meiosis; gametophytes produce haploid gametes by mitosis and cellular differentiation.
		A pine seed consists of a tough outer integument (2n) and nucellus or megasporangium (2n) that are part of the ovule of the parent sporophyte, haploid gametophyte tissue (n) and the embryo sporophyte (2n).
		The embryo sporophyte consists of plumule, hypocotyl, and radicle, as in corn, but the bulk of the seed is the pair of cotyledons, which are also diploid sporophyte tissue.
	faculty.baruch.cuny.edu /jwahlert/bio1003/anthophyta.html (1349 words)

	Liverworts, Hornworts, and Mosses (Site not responding. Last check: 2007-10-15)
		Sporophytes have a discrete epidermis and in Mosses and Hornworts stomates and guard cells are present.
		Although the sporophyte may be green and readily evident when present (Mosses and Hornworts), the diploid phase remains attached to and nutritionally wholly or largely dependent on the gametophyte.
		Sporophytes are prominent, fairly large with long, wiry stalks whose internal anatomy is stem-like resembling that of the sporophyte (Fig.
	www.bio.ilstu.edu /armstrong/syllabi/222book/chapt6.htm (8918 words)

	Anthocerophyta Description
		The sporophyte is differentiated into a bulbous foot embedded in gametophyte tissue and a prominent elongated cylindrical spore-bearing region.
		In Notothylas, the basal meristem functions for a limited period; the sporophyte remains small and it is frequently retained within the protective tissue of the gametophyte.
		An assimilative (photosynthetic) layer underlies the epidermis and the sporogenous tissue is situated between this layer and the columella.
	www.science.siu.edu /landplants/Anthocerophyta/HornwortDesc.html (479 words)

	Moss sporophyte (Site not responding. Last check: 2007-10-15)
		All bryophytes have an alternation of generations lifecycle The sporophyte (spore-producing moss plant) is very small and leafless and is attached to the top of the moss gametophyte (gamete plant).
		It consists of a seta (slender stalk) and a terminal capsule (sporangium).
		Leptostomum macrocarpon This is known as the pin cushion moss moss because of its cushion like growth form with large numbers of delicate, pin-like sporophytes.
	www.sbs.auckland.ac.nz /info/schools/nzplants/moss_sporophyte.htm (99 words)

	Pterophyta, Laboratory Notes for BIO 1003
		The diploid sporophyte (2n) is the plant that you call a fern.
		The sporophyte grows on the site of the archegonium as in Marchantia, but it is an independent plant, not a parasite, because it forms roots and photosynthetic green leaves.
		Suppose that a fern sporophyte is heterozygous for a lethal recessive allele which prevents synthesis of chlorophyll.
	www.baruch.cuny.edu /wsas/departments/natural_science/biology/bio1003/pterophyta.html (771 words)

	Multiple Choice Quiz
		The sporophyte (multicellular diploid) is the conspicuous stage.
		gametophyte is prominent, and the sporophyte is dependent upon the gametophyte.
		sporophyte is prominent, and the gametophyte is dependent upon the sporophyte.
	highered.mcgraw-hill.com /sites/0072437316/student_view0/chapter29/chapter_quiz.html (330 words)

	Evolution of Plants (Site not responding. Last check: 2007-10-15)
		In primitive plants (bryophytes particularly) the sporophyte often is not free living and must be nourished by the gametophyte.
		The sporophyte in nonvascular plants may be nutritionally dependent on the gametophyte, but the gametophyte is not nutritionally dependent on the sporophyte.
		Pollen grains are produced in huge numbers by male cones borne on the familiar conspicuous plant, the sporophyte, and are disseminated by the wind.
	www.mansfield.ohio-state.edu /~sabedon/biol3060.htm (4045 words)

	Life Science \| Session 4
		The scientific terms for these generations are sporophyte (sporo = spore; phyte = plant; therefore, spore-producing plant) and gametophyte (gameto = sex cell; phyte = plant; therefore, sex-cell-producing plant).
		The life cycle is completed with the development of the sporophyte, which carries chromosomes as doubles.
		In the conifers, the stately needle- and cone-bearing trees are the sporophytes.
	www.learner.org /channel/courses/essential/life/session4/closer1.html (1345 words)

	GYMNOSPERMS (Site not responding. Last check: 2007-10-15)
		The developing sporophyte embryo is nourished directly by the previous sporophyte phase, and further provisioned for rapid growth of the embryo into plantlet and plant.
		In Mosses, Liverworts, and Hornworts, the gametophyte phase is largest, dominant, and persistent, and the sporophyte phase is smaller, shorter-lived, and partly or wholly nutritionally dependent upon the gametophyte.
		In seed plants the sporophyte is the large, dominant, and persistent phase, which in some cases is superbly well adapted to even the most severe terrestrial conditions.
	www.bio.ilstu.edu /armstrong/syllabi/222book/chap10.htm (10635 words)

	Biology - Diversity - Gymnosperms
		The zygote grows into an embryo (sporophyte) still inside the female gametophyte which is inside the seed coat and nucellus derived from the parent sporophyte.
		Yes cells in the male cones of the sporophyte undergo meiosis and then the haploid microspores develop a much reduced male gametophyte with just four cells at the time that they are shed.
		Yes, the seed coat is from one sporophyte generation, and the embryo is the beginning of the next.
	www.hcs.ohio-state.edu /hort/biology/dgymn.html (1005 words)

	Bryophytes: Hornworts (Site not responding. Last check: 2007-10-15)
		The sporophyte is parasitic (dependent!) on the gametophyte.
		The zygote and resulting young sporophyte is initially dependent on the gametophyte for nutrition.
		The presence of a photosynthetic (less parasitic) sporophyte, its indeterminate growth, and indeterminate reproductive capacity are characteristics that we find in vascular plant sporophytes.
	koning.ecsu.ctstateu.edu /Plant_Biology/hornwort.html (653 words)

	Algae II
		Laminaria's sporophyte is a complex, leathery, parenchymatous thallus divided into a blade, a stipe (up to 3 m long) and a holdfast.
		The sporophyte and gametophyte generations look quite different and for this reason Laminaria is said to show heteromorphic alternation of generations.
		The sporophyte produces multiflagellate spores by meiosis which settle to form the baloon-shaped gametophyte.
	scitec.uwichill.edu.bb /bcs/bl14apl/algae2.htm (1040 words)

	BSCI 124 Lecture Notes -- Onto Land & Spore Formers
		A sporophyte develops from an embryo which is still enclosed in the archegonium of the gametophyte plant; therefore, the sporophyte is permanently attached to the gametophyte.
		The mature sporophyte consists of a foot (the attachment point of the sporophyte to the gametophyte), a seta (stalk), and a capsule (spore case).
		Unlike the bryophytes with their small dependent sporophyte generation, seedless vascular plants like ferns have an independent sporophyte generation that is larger and more conspicuous than the independent gametophyte generation.
	www.life.umd.edu /classroom/bsci124/lec18.html (1839 words)

	The cost of realized sexual reproduction: assessing patterns of reproductive allocation and sporophyte abortion in a ...
		Sporophyte mass was assessed at four possible phases in its
		Table 2. Frequency of sporophyte abortion of cohort and noncohort sporophytes.
		sporophytes and ignores mixed-sex populations that have not
	www.amjbot.org /cgi/content/full/87/11/1599 (5787 words)

	Bryophyte Reproductive Cycle
		The Sporophyte eventually causes the calyptra to rupture but some of it is carried aloft by the elongating Sporophyte.
		The Sporophyte may be green at first but it depends on photosynthate from the gametophyte in order to grow.
		The Foot anchors the Sporophyte in the Gametophyte and it absorbs nutrients from the Gametophyte.
	www.biologie.uni-hamburg.de /b-online/library/webb/BOT311/Mosses/SexRepro-1.htm (238 words)

	Biology - Diversity - Non-vascular Plants
		Sporangia are formed on the sporophyte (on the moss and throughout the plant kingdom)
		Yes while it is still in the archegonium and at the tip of the female gametophyte a new plant, the sporophyte, starts to grow.
		The sporophyte grew out of a zygote formed by the fusion of two (haploid) gametes.
	www.hcs.ohio-state.edu /hort/biology/dnonv.html (992 words)

	Kingdom Plantae is Divided into Three Major Groups (Site not responding. Last check: 2007-10-15)
		Sporophyte generation consists of a stalk and capsule (together called the sporogonium) and is dependent on the gametophyte for its lifetime, it cannot live an independent existence.
		Sporophyte is dominant with tiny leaves (scale like) but no stems
		Sporophyte is dominant with true roots, stems and leaves
	www.mrwatkins.com /preapbiologynotes/plantae.html (1427 words)

	Biology 321 - UBC
		The sporophyte refers to the diploid generation of the moss.
		The sporophyte relies on the gametophyte to provide it with food and water, which are passed through transfer cells that lie in the placental layer between the gametophyte and the sporophyte.
		The sporangium is the main body of the sporophyte and is the organ in which the spores are produced.
	www.botany.ubc.ca /bryophyte/mossintro.html (1201 words)

Try your search on: Qwika (all wikis)