327 - 11th Botany Textbook Volume 1

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Gynoecium is female part of flower.Ovary, style and stigma are parts of pistil.According to number of carpels it is dividedinto monocarpellary, bicarpellary etc. Itmay be apocarpous or syncarpous. Loculenumber may be one to many. The ovaryis superior or inferior or semi inferior.Mode of distribution of placenta insidethe ovary is placentation. Constructionof floral diagram and floral formula forgiven flower with some examples.Fruits are the products of pollinationand fertilization. Fruit developed fromsingle ovary of flower is called simplefruit. Simple fruits are two types based onthe fruit wall as simple fleshy and simpledry. An intermediate between dehiscentand indehiscent fruit is called schizocarpicfruit. The simple fruits could be fleshyor dry which could again be dehiscentor indehiscent. Fruits that are developedfrom multicarpellary, apocarpus pistil iscalled aggregate. Multiple or compositefruit develops from the flowers of thecomplete inflorescence. Seed is a ripenedovule which contains the embryo or theminiature of plant body. Seeds with onecotyledon are monocotyledonous andwith two cotyledons are dicotyledonous.Evalution1. Vexillaryaestivation ischaracteristic of thefamilya. Fabaceaeb. Asteraceaec. Solanaceae d. Brassicaceae2. Gynoecium with united carples istermed asa. Apocarpous b. Multicarpellaryc. Syncarpous d. None of the above3. Aggregate fruit develops froma. Multicarpellary, apocarpous ovaryb. Multicarpellary, syncarpous ovaryc. Multicarpellary ovaryd. Whole inflorescence4. In an inflorescence where flowersare borne laterally in an acropetalsuccession the position of the youngestfloral bud shall bea. Proximal b. Distalc. Intercalary d. Anywhere5. A true fruit is the one wherea. Only ovary of the flower developsinto fruitb. Ovary and calyx of the flowerdevelops into fruitc. Overy, calyx and thalamus of theflower develops into fruitd. All floral whorls of the flowerdevelops into fruit6. Find out the floral formula for abisexual flower with bract, regular,pentamerous, distinct calyx andcorolla, superior ovary withoutbracteole.7. Give the technical terms for thefollowing: -a. A sterile stamenb. Stamens are united in one bunchc. Stamens are attached to the petals8. Explain the different types ofplacentation with example.9. Differenciate between aggregate fruitwith multiple fruit.10. Explain the different types of fleshyfruit with suitable example.158
ICT CornerFloral diagram and floral formulaLet’s generateFloral diagram andFloral formula.Steps• Scan the QR code• Enter sepal, petal, androecium & Gynoecium• Select enable colour• Select shape of sepal & petal, fused (if so)• Enter carpel number & position submit the from• Click formula to generate floral formulaActivity• Make floral diagram and formula of various flower by changing numbers andpositions of floral parts.• You can edit the floral diagram using Inkscape, which is denoted in help tap.Step 1 Step 2Step 3URL:http://kvetnidiagram.8u.cz/index_en.php* Pictures are indicative only159
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GOVERNMENT OF TAMIL NADUBOTANYHIGHE
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CONTENTSBOTANYUNIT I: Diversity of
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TNAU B.Sc. Agriculture, B.Sc. Horti
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Research Institutions in various ar
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Chapter1Unit I: Diversity ofLiving
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(a)Nucleus(b)to change is called Ho
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1892 Dimitry Ivanowsky proved thatv
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1.2.6 BacteriophageViruses infectin
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are similar to viroids but they are
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Table 1.4: Systems of Classificatio
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Table 1.5: Comparison of Five Kingd
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CoccusDiplococcusStaphylococcusTetr
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MesosomesThese are localized infold
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What are Magnetosomes ?Intracellula
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with the help of pili. The pilus gr
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Table 1.7: Economic importance of B
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Table 1.10: Human diseases caused b
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• The reserve food material isCya
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logos - study). P.A. Micheli is con
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TrichogyneMicroconidia(f) Sporangia
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Zygomycetes• Most of the species
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fungi, stink horns, rusts and smuts
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like Amylase, Protease, Lactase etc
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and multinucleate structures which
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Figure 1.29: V.S. of Agaricus gillb
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evenly distributed in the thallus)
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6. Differentiate Homoiomerous andHe
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Chapter2Plant KingdomLearning Objec
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2.2 Life Cycle Patterns in PlantsAl
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FlagellaChloroplastOogoniumAntherid
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Autospores (spores which look simil
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r-phycocyanin are the photosyntheti
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ReproductionOedogonium reproduces b
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cells are elongated and possesses a
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• Sexual reproduction is Oogamous
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GametophyteThe plant body of Marcha
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The sporophyte is not free-living b
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4. Development of Bulbils on the rh
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2.5 PteridophytesSeedless Vascular
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Division-PTERIDOPHYTASub divisionPs
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but it is viewed to be associated w
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microsporangium and megaspores inme
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The epidermis is the outermost laye
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1. Protostele:In protostele phloem
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a) Cycas b) Thuja c) Taxus d) Ginkg
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2.6.4 CycasClass - CycadopsidaOrder
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of the rachis is the arrangement of
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consists of 3 layers, the outer and
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(ii) Dwarf shoot or branches of lim
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Figure 2.53b Pinus Pollen Grainc) A
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parts of the extinct plants are obt
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The sporangia with spores are found
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ICT CornerDifferent forms of plants
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3.1 HabitThe general form of a plan
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I. Characteristic features• Root
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3.5.2 Modifications of rootI. Tap r
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3. Sucking or Haustorial rootsThese
Page 115 and 116: 3.6.2 Types of StemMajority of angi
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Page 119 and 120: 4. TuberThis is a succulent undergr
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Page 123 and 124: AlternatePolyalthia4. Whorled (vert
Page 125 and 126: (a) (b) (c) (d) (e)Figure 3.16: Typ
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Page 131 and 132: Chapter4Reproductive MorphologyLear
Page 133 and 134: 4.1.2 Based on branching pattern an
Page 135 and 136: f. Panicle: A branched raceme is ca
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Page 139 and 140: 4.2 FlowerIn a plant, which part wo
Page 141 and 142: Figure 4.13: (a)ActinomorphicFigure
Page 143 and 144: Figure 4.17: (a)TrimerousFigure 4.1
Page 145 and 146: Figure 4.21: (d)CampanulateFigure 4
Page 147 and 148: 4.3.7 Aestivation: Arrangement of s
Page 149 and 150: c. Gynostegium:Connation product of
Page 151 and 152: 4.4.7 Anther dehiscing directionIt
Page 153 and 154: CorollaAnthophoreCalyxSaffron flowe
Page 155 and 156: 4.6 Construction of floral diagrama
Page 157 and 158: Br : Bracteate.Ebr : EbracteateBrl
Page 159 and 160: Berry (Tomato)Drupe (Mango)Pepo (Cu
Page 161 and 162: is free from seed coat. Example: Cl
Page 163 and 164: FruitsSimpleAggregateMultipleEtaeri
Page 165: 4.8 SeedDo all fruits contain seeds
Page 169 and 170: laid strong foundation for the bino
Page 171 and 172: Another concept emphasises the prod
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Page 175 and 176: Regional FloraIt includes large geo
Page 177 and 178: Botanical garden contains special p
Page 179 and 180: International HerbariumS.No Herbari
Page 181 and 182: Taxonomists have assigned a methodo
Page 183 and 184: Seed plantsClass IDicotyledonaeClas
Page 185 and 186: Figure 5.8: Adolph Engler and Karl
Page 187 and 188: Monocots are classified into 11 ord
Page 189 and 190: 1. Easily visible characters like s
Page 191 and 192: the form of a tree called phylogene
Page 193 and 194: based on shared apomorphic characte
Page 195 and 196: Flowers: Bracteate, bracteolate(Ses
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Page 199 and 200: Economic ImportanceEconomicimportan
Page 201 and 202: 5.13.2 Family: Apocynaceae (milk we
Page 203 and 204: FlowerLeafFruitCorollaSepalCalyxL.S
Page 205 and 206: Economic importance of the family A
Page 207 and 208: 5.13.3 Family: Solanaceae (Potato F
Page 209 and 210: LeafStamenCorollaStamenCorollaCalyx
Page 211 and 212: Habit: A small annual herbRoot: Bra
Page 213 and 214: 5.13.4 Family: Euphorbiaceae (Casto
Page 215 and 216: Botanical Description Of Ricinus co
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Economic importance of the family E
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HeliconiaceaeSystematic PositionAPG
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LeafSpatheFlowerFruitBranchedspadix
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Economic Importance of The Family M
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in species of Smilax it is reticula
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Economic importance of the family l
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State Flower of Tamil NaduGloriosa
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as karyotaxonomy. The application o
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Chapter6Unit III: Cell biology andB
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microscopic organisms therefore it
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Microscopic measurements:The micros
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Comparison of MicroscopesFeaturesSo
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These solutes may be homogeneous(so
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of nuclear material. The DNA is wit
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The first cell might have evolvedap
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In plant, cell wall shows three dis
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Figure 6.13: Transport of molecules
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The largest of the internal membran
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time faster than DNA in the nucleus
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Ribosome consists of RNA andprotein
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v. Tannins in Mimosa pudica.vi. Rap
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secondary constrictions are called
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chromosome forms the chromosomal ax
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c. Smears: Here the specimen is in
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organisms are classified into proka
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ICT CornerCell structureCell-The un
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7.1 History of a CellTable 7.1: His
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Figure 7.1: Cell cyclethe cell cycl
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Drawbacks of Amitosis• Causes une
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the key regulatory proteins at the
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organs. It results in the formation
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Figure 7.8: MeiosisTelophase IIFour
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Summary273
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ICT CornerCell divisionHow cells ar
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222222BiomoleculesOrganic compounds
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8.2 Primary and SecondaryMetabolite
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8.3.2 DisaccharidesDisaccharides ar
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8.3.8 ChitinChitin is a homo polysa
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linoleic acid) the hydrocarbon chai
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8.5 ProteinsProteins are the most d
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8.5.2 Structure of ProteinProtein i
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colour develops without heating (Fi
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8.6.3 Factors Affecting the Rate of
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allosteric inhibitors. Eg. The enzy
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LyaseLigaseEnzymesMode ofactionBrea
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A characteristic feature that diffe
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Blue bands - Twosugar-phosphatechai
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Evaluation1. The most basic amino a
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ReferencesUnit 1: Diversity of Livi
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GlossaryAcetyl CoAActive siteAkinet
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English - Tamil TerminologyAcropeta
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Competitive Examination QuestionsUn
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22. Which one of the following stat
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18. How many plants in the list giv
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BOTANICAL NAMES AND COMMON NAMESS.N
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64 Musa paradisiaca Banana வா
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327 - 11th Botany Textbook Volume 1

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