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Botany for Master Gardeners Kim Conway Texas AgriLife Extension.

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Presentation on theme: "Botany for Master Gardeners Kim Conway Texas AgriLife Extension."— Presentation transcript:

1 Botany for Master Gardeners Kim Conway Texas AgriLife Extension

2 Naming Plants Carl Linneaus ( ) Binomial nomenclature Based on flower parts – Family – Genus – Species

3 Plant Categories Angiosperms – Monocots – Dicots Gymnosperms – Conifers

4 Life Cycles Annuals Biennials Perennials – herbaceous – woody

5 Plant Parts & Functions Sexual – flower Asexual – leaves – stems – roots

6 Roots Primary Roots Taproot Lateral Roots Fibrous

7 Roots Knees Buttressed Aerial

8 Tuberous Roots No Nodes

9 Root Structure endodermis epidermis phloem root hair pericycle endodermis casparian strip meristem rootcap

10 Dicot Root

11 Monocot Root

12 Stems Support Vascular System Buds – Leaf Bud – Flower Bud – Terminal – Lateral/Axillary – Adventitious Leaves

13 Meristems Primary Growth – apical meristem or apex Secondary Growth – Vascular cambium or cambium

14 Primary Growth - Monocot epidermis vascular bundle phloem xylem bundle sheath

15 Monocot Stem

16 Primary Growth – dicot or gymnosperm epidermis phloem xylem pith cortex

17 Dicot Stem

18 Secondary Growth - dicots periderm phloem cambium xylem ray crushed cortex and past years phloem pith

19 Modified Stems - Crowns & Stolons

20 Modified Stems - Spurs

21 Modified Stems Bulb Tuber Rhizome Bulb Corm

22 Types of Leaves Scale leaves Seed leaves Spines Thorns Tendrils Brachts Needles Simple

23 Leaves Absorb sunlight for photosynthesis

24 Leaf Layers

25

26

27 Stomates

28 Leaf Venation Pinnate Palmate Parallel

29 Double Pinnate Compound Palmate Compound Simple Leaf Types Pinnate Compound

30 Leaf Shapes Linear Elliptical Ovate Lanceolate Cordate

31 Leaf Types

32 Leaf Margins Entire Sinuate Crenate Dentate Serrate Incised Lobed Cleft

33 Leave Arrangement alternate opposite whorled

34 Sexual Plant Parts & Functions (Flowers)

35 Parts of the Flower Petal Anther Filament Sepal Ovule Receptacle Stigma Style Ovary } Stamen { Pistil

36 Types of Flowering Plants Monoecious = 1 House – Corn – Pecan Dioecious = 2 Houses – Holly – Junipers

37 Flowers Complete = Pistil, Stamen, Petal, Sepals Incomplete = Missing One Perfect = Pistil & Stamen

38

39 How Seeds Form Pollination Pollen tube Fertilization Pollen Germination Growth of Pollen Tube toward Ovule

40 Types of Flowers Solitary - one flower per stem Inflorescence - a cluster of flowers – racemous - indeterminate (flower from the bottom up)

41 Racemous Flowers Spike - flowers attached to peduncle - gladiolus

42 Racemous Flowers Raceme - individual flowers attached by tiny stems to the peduncle – Bluebonnet

43 Racemous Flowers Catkin – Mulberry – birch

44 Racemous Flowers Corymb – yarrow

45 Racemous Flowers Umbel – – dill, – onion – queen annes lace

46 Racemous Flowers Head – – sunflower – daisy

47 Flower Types cyme - determinate - flower from the top down - top florets open first – dischasium cyme - babys breath – helicoid cyme - freesia – scorpioid - tomato (alternate)

48 Types of Inflorescence

49 Fruit Fruit consists of the fertilized and mature ovules (seeds) and the ovary wall.

50 Parts of the Fruit seed dry fruit (corn) fleshy fruit (peach) exocarp mesocarp endocarp pericarp

51 Types of Fruit Berry Pepo Pome Hesperidium drupe pod aggregate multiple

52 Parts of the Seed testa (seed coat) hilum micropyle dicot seed (bean) plumule epicotyl cotyledon hypocotyl radicle embryo

53 Seed Germination Water Light Heat Oxygen

54 The End


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