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Campbell Biology Ch 29/30 Flashcards

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3924923141CharophytesGreen Algae, the closest relatives of land plants0
3924937644Charophytes and Land PlantsBoth are multicellular, eukaryotic, photosynthetic and have cell walls1
3924951956Land Plants Share These Three Traits with Only Charophytes1- Rings of cellulose-sythesizing proteins 2- Structure of Flagellated sperm 3- Formation of a phragmoplast ( Land Plants are not a descent of modern Charophytes, they share a common anestor)2
3924989619EmbryophytesLand plants with embryos3
3924996697SporopolleninA durable polymer in Charophytes that prevent exposed zygotes from drying out, resistant to harsh envoriments4
3925013552Five Key Traits of Land Plants (absent in Charophytes)1 - Alternation of Generations 2 - Multicellular, dependent embryos 3 - Walled spores produced in sporangia 4 - Multicellular Gametangia 5 - Apical Meristems5
3959421939Alternation of GenerationsA reproductive cycle where plants alternate between two multicellular stages6
3959432542GametophytesHaploid stage, that produces haploid gametes by mitosis7
3959442459SporophytesDiploid stage, that produces spores by meiosis8
3959459792Multicellular, dependent embryoThe diploid embryo is retained within the tissue of the female gametophyte, nutrients are transferred from parent to embryo9
3959475138SporangiaOrgans that produce spores10
3959475139GametangiaProduces gametes11
3959477405ArchegoniaFemale gametangia, produce eggs and are the site of fertilization12
3959514474AntheridiaMale gametangia, produce and release sperm13
3959523472Apical MeristemsThe part of the plant that sustains continual growth in the plant (apical stem and apical root)14
3959536424CuticleA waxy covering of the plant's epidermis15
3959539068StomataAre specialized cells that allow for gas exchange between the outside air and inside of the plant16
3959548044MycorrhizaeSymbiotic associations between fungi and land plants that may have helped plants without true roots to obtain nutrients17
3959601378BryophytesNonvascular plants -Examples Liverworts, Mosses, and Hornworts -Have lager and longer living gametophytes stages then sporophytes stages -Have flagellated sperm18
3959615421Seedless Vascular PlantsHave vascular tissues, Lycophytes and Monilophytes19
3959622250LycophytesClub mosses and their relatives20
3959625778MonilophytesFerns and their relatives21
3959636282GradeOrganisms that are grouped based on shared key biological features, rather than shared ancestry22
3959665725SeedAn embryo and nutrients surrounded by a protective coat23
3959676968GymnospermsHas a "naked seed" plants, including the conifers24
3959676969AngiospermsFlowering plants, 90% of all plants25
3959715107ProtonemaA spore germinates into a ________, and then into a game-producing gametophore26
3959738771RhizoidsAnchor gametophytes to substrate (ground/soil)27
3959790491Bryophyte PartsFoot Seta Sporangium Capsule (discharges spores through a peristome)28
3959818158Peat Moss Sphagnum- Forms extensive deposits of partially decayed organic material know as peat - Can be used as a fuel - Lowers temperature, pH, and oxygen levels of peatlands - Inhibits decay of other organisms - Peat contains 30% of the worlds soil carbon, overheating it would release the carbon into the atmosphere29
3959896107Traits of Vascular Plants- Life cycles with dominant sporophytes - Vascular tissues called xylem and phloem - Well-developed roots and leaves30
3959938397Xylem- Conducts most of the water and minerals, includes tube shaped cells called tracheids - Stegthened by Lignin31
3959938398PhloemHas cells arranged into tubes that distribute sugars, amino acids, and other organic material32
3959940611Roots- Organs that anchor the plant and absorb nutrients in the soil - Evolved from subterranean stems - Allows the plant to grow tall33
3959940612LeavesOrgans that increase the plants surface area of vascular plants, thereby casting more solar energy that is used for photosynthesis34
3959943967MicrophyllsLeaves with a single vein, only Lycohytes35
3959945411MegaphyllsLeaves with highly branched vascular system36
3959950737SporophyllsModified leaves with sporangia37
3959950738SoriClusters of sporangia on the underside of sporophylls38
3959950739StrobiliCone like structures formed from groups of sporophylls39
3959953223HeterosporousProduce both megaspores and microspores40
3959953224MegasporesGive rise to the female gametophytes41
3959955657MicrosporesGive rise to the male gametophytes42
3959959019HomosporousPlant produces one type of spore that develops into a bisexual gametophytes43
3959961374MegasporangiaProduces megaspores that give rise to female gametophytes44
3959965215MicrosporangiaProduce microspores that give rise to male gametophytes45
3959967044Pollen GainsMicrospores develops into _________, which contain the male gametophytes46
3959967045PollinationThe transfer of pollen to the part of ta seed plant containing the ovules- eliminates the need of water for sperm47
3959971641Ovule-Consists of a megasporangium, megaspore, and protective integuments48
3959974409Advantages of Seeds-May remain dormant for days or years -Stored food supply -Transported over long distances, megaspore, and one or more protective integuments49
3960144095Gymnosperm Life Cycle- Miniaturization of their gametophytes - Development of seeds from fertilized ovules - The transfer of sperm to ovules by pollen50
3960151719ConifersCone bearing plants51
3960155856Small ConesProduce mircospores52
3960157491Large ConesProduce megaspores53
3960188256Characteristics of Angiosperm54
3960188257Sepals55
3960188258Petals56
3960189828Stamens57
3960191257Carpel/Pistil58
3960191258Flower59
3960191259Filament60
3960193115Anther61
3960193116Ovary62
3960193117Style63
3960194891Stigma64
3960196204Complete Flowers65
3960196205Incomplete Flowers66
3960196206Fruit67
3960200003Radial Symmetry68
3960201812Bilateral Symmetry69
3960204060Embryo Sac70
3960204061Endosperm71
3960206179Micropyle72
3960207491Double fertilization73
3960209375Cotyledons74
3960209376Monocots75
3960209377Dicots76
3960211018Eudicots77
3960212592Basal Angiosperms78
3960217419Artificial Selection79

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