A progymnosperms archeopteris tree plant with fern

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A progymnosperms Archeopteris (tree plant with fern leaves) Hydroid Water conducting cell in bryophytes Androecium Collection of stamens in a flower Protostele Phloem surrounding by xylem, found in ferns (primitive plants) Dieocy Unisexual sporophyte Homospory Bisexual gametophyte A gymnosperm Gnetum Elator Something that is hygroscopic Calamites Flourished during the carboniferous period Circinate vernation Leaf form found in ferns an cycads Trimerophyta Primitive vascular seedless plants Rhizoid Filamentous root growth in lower plants. gynostrobilus Female reproductive cone of cycads Heptatophyta Another name for liverworts. Androstrobiulus Male reproductive cone of cycads Coal age plants 5 phyla of plants that dominated swamp lands and grew from coal based soil.
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18. Within most natural vegetation, the vast majority of angiosperm offspring that get established as seedlings, and that survive, will be suppressed weaklings at maturity with a high probability of early mortality, plus three specific major disadvantages for success in reproduction. Briefly describe these three disadvantages. (2013) 1) Disadvantage for success as a pollinator and/or success in attracting or competing for pollinators. 2) Insufficient size to physically support or disperse a large seed. 3) Insufficient resources or time to make a large seed. 19. Describe the differences in the mature male and female gametophyte in selaginella, pinus, lily, marchantia, equisetum, byridae (true mosses). (2013, 2007) 20. Fill the table below (2013, 2011, 2004) 21. Fill in the spaces below in the correct order. All higher plants are ____, and most of these today are____, and most of these today are____, and most of these today are____. (2012, 2011) Embryophytes, tracheophytes, spermatophytes, angiosperms 22. Most embryophytes have at least one mobile phase. (2012, 2008, 2004) Species Male Gametophyte Female Gametophyte Pinus Pollen grain: 2 prothalial cell, one generative cell (splits into sterile and sperm) and one tube cell Ovuliferous scale contains embryo sac which contains egg Has archegonia Selaginella Microgametophyte is very small Female has three layers, megasporangium holding megaspore, holding megagametophyte Lily Stamen with filament and anther Carpel with ovule and embryo sac contain two antipodal cells, one egg cell, three synergid cells and two polar nuclei. Marchantia Antheridiophore: small flat disk on top of a stalk Archengoniophore: umbrella like structure Equisetum Looks like a little shrub, bisexual produces both archegonia and antheridia, spores produce gametophyte Byridae Antheridia with paraphyses that retain water Female has archegonia with venter and neck. How many sporangia are normally produced on a single sporophyte? What maximum number of mature sporophytes can result from fertilization within a single gametophyte?
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  • Fall '08
  • Flowering plant

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