Zygote

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Pronunciation key

( zīgōt )
( zigōt )

zy•gote

n.

[< Gr. zygōtos yoked < zygon a yoke].

  1. A cell formed by the union of two gametes.
Sexual Reproduction in Algae
Some cells develop large eggs while other forms develop sperm that swim to an egg and fertilize it, forming a zygote. Such an example is the species Oedogonium (above).

References

  • Webster's New World Dictionary of the American Language (College Edition) ©1955
  • A Golden Guide: Non-Flowering Plants ©1967
  • Read More »

    Oedogonium

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    Oedogonium

    Sexual Reproduction in Algae
    Some cells develop large eggs while other forms develop sperm that swim to an egg and fertilize it, forming a zygote. Such an example is the species Oedogonium (above).
    Taxonomic Hierarchy
    Kingdom Plantae – Vegetal, plants
    Subkingdom Viridaeplantae – green plants
    Infrakingdom Chlorophyta – green algae
    Division Chlorophyta – green algae
    Subdivision Chlorophytina
    Class Chlorophyceae
    Order Oedogoniales
    Family Oedogoniaceae
    Genus Oedogonium Hirn, 1900
    Oedogonium, Hirn, 1900, Taxonomic Serial No.: 8959

    References

  • A Golden Guide: Non-Flowering Plants ©1967
  • Read More »

    Ulothrix

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    Ulothrix

    Asexual Reproduction in Algae
    The parent cell becomes modified, ruptures and zoospores are released as in the species Ulothrix, (above).
    Taxonomic Hierarchy
    Kingdom Plantae – Vegetal, plants
    Subkingdom Viridaeplantae – green plants
    Infrakingdom Chlorophyta – green algae
    Division Chlorophyta – green algae
    Subdivision Chlorophytina
    Class Ulvophyceae
    Order Ulotrichales
    Family Ulotrichaceae
    Genus Ulothrix Kuetzing, 1836
    Ulothrix, Kuetzing, 1836, Taxonomic Serial No.: 6417

    References

  • A Golden Guide: Non-Flowering Plants ©1967
  • Read More »

    Phylum

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    Pronunciation key

    ( fī′ləm )

    phy•lum

    n. pl.

    •la (-lə)

    [<NL < Gk. phylon a race, tribe < phyein produce, ]

    1. Biology. Great division of life forms, i.e., plants, animals, et cetera which rank next, below the major kingdom and above a class of which the members are believed to have a common ancestor.
    2. Any of the broad, basic divisions of plant, animal, et cetera classifications.
    3. Any of the broad, basic divisions of the linguistic families.

    References

  • Webster's New World Dictionary of the American Language (College Edition) ©1955
  • Funk and Wagnalls Standard Dictionary, Comprehensive International Edition, ©1976
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    ewe

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    Pronunciation key

    ( ū )

    ewe

    n.

    [ME. ewe also yowe; AS. eowu fem. of eow sheep; akin to G. au- in aulamm ewe lamb; IE.. base *owi-s, sheep, as also in L. ovis].

    The female of sheep.

    Taxonomic Hierarchy
    ewe
    Kingdom Animalia – Animal, animals
    Phylum Chordata – chordates
    Subphylum Vertebrata – vertebrates
    Class Mammalia Linnaeus, 1758 – mammals
    Subclass Theria Parker and Haswell, 1897
    Infraclass Eutheria Gill, 1872
    Order Artiodactyla Owen, 1848 – artiodactyls, cloven-hoofed ungulates, even-toed ungulates
    Family Bovidae Gray, 1821 – antelopes, cattle, goats, sheep, bovids
    Subfamily Caprinae Gray, 1821
    Genus Ovis Linnaeus, 1758 – sheep
    Ovis, Linnaeus, 1758 Taxonomic Serial No.: 180709

    References

  • Webster's New World Dictionary of the American Language (College Edition) ©1955
  • Ewes, Sheepy Hollow Farm
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    estuary

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    Pronunciation key

    ( esch-er′i )

    es•tu•ar•y

    n. [pl. ESTUARIES (-iz)]

    [L. aestuarium < aestus the tide].

    1. An arm or inlet of the ocean.
    2. A wide mouth of a river where the tide meets the current.

    Abbreviated as est.

    estuary

    References

  • Webster's New World Dictionary of the American Language (College Edition) ©1955
  • Coastal Hypoxia Research Program (CHRP 2005): Watershed-Estuary-Species Nutrient Susceptibility
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    élan vital

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    Pronunciation key

    ( ā′län vē′tl )

    é•lan vi•tal

    [Fr. lit., vital force].

    According to Bergsonian philosophy, it is the original life force, a creative linking principal in the evolution of all organisms.

    References

  • Webster's New World Dictionary of the American Language (College Edition) ©1955
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