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Published byClifford Merritt Modified over 9 years ago
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Cory Tanner Consumer Horticulture Agent/Master Gardener Coordinator
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Terminology Botany: the science of plants Anatomy: internal structure Morphology: external structure/form Taxonomy: the classification of plants Physiology: study of plant growth and development
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Vascular Plants Ferns Cone Bearing Plants Flowering Plants Dicots Monocots
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Terminology Gymnosperm – “naked seed” Has no flower or ovary (fruit); only cones All conifers (pines, cedars, arborvitae) Angiosperm – “vessel seeded” Has a flower with an ovary (fruit) All flowering plants Divided into Monocots and Dicots
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Terminology Dicotyledons (Dicots): - flowering plants that contain two seed leaves Monocotyledons (Monocots): - flowering plants that possess one seed leaf
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MonocotDicot
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Plant Parts Plant parts fall into two categories: a) vegetative b) sexual reproductive
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Meristems Apical Meristems (aka Terminal Buds) Found at shoot and root tips Produce stems, roots, leaves, and lateral buds Responsible for shoot/root length (Primary Growth) Lateral Meristems (aka Cambium) Located laterally along stems and roots Responsible for increases in stem/root girth (Secondary Growth)
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Vascular Tissues Xylem – transports water and mineral nutrients from roots to stems and leaves. Phloem – transports sugars (photosynthates) from leaves to other plant parts. Can move “sap” up or down. Xylem and phloem arranged in vascular bundles.
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Roots Functions of Roots: 1. absorption (water and mineral) 2. structural support 3. storage Types of Roots: 1. radicle – seed root 2. primary root – tap root 3. lateral root
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Root Anatomy
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Above Ground
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* * * * * * Stem Parts
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Stem Anatomy
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Tree Trunk Components
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Types of Buds
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Vine Morphology
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blade petiole midrib Leaf Parts
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Leaf Anatomy
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Leaf Arrangement Leaf Types
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Leaf Venation Venation refers to the pattern in which the veins are distributed in the leaf blade Parallel or Net-veined Net-veined can be either pinnate or palmate
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Sepals - small, green, leaf-like structures on the base of the flower Petals - highly colored parts of the flower Stamen - male reproductive parts Pistil - female reproductive parts Flower Anatomy
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Perfect flower - has a stamen, pistil, petal and sepals. Incomplete flower - missing one of the four parts Complete flower - has a stamen and pistil Imperfect flower - has either stamen (staminate) or a pistil (pistillate)
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Dioecious - have staminate (male) and pistillate (female) on separate plants i.e., hollies. Monoecious - have male and female flowers on the same plant i.e., squash and cucumbers. Flower Anatomy
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Inflorescences: flower arrangements
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Pollination Cross-pollination - pollen from one plant is transferred to the stigma of another. Self-pollination - the stigma is pollinated by pollen from the same plant. Fertilization - ovule (egg) is fertilized by the sperm from the pollen grain.
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Fruit Seed An enlarged ovary. -Simple -Aggregate -Multiple A mature ovule, that contains the embryo and cotyledons (starch filled food source).
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Growth Cycles Annual: A plant that completes its lifecycle in one growing season. Winter annuals survive the winter, summer annuals survive the summer. Biennial: A plant the requires two growing seasons to complete its lifecycle. Herbaceous perennial: A non-woody plant that lives for several years. It’s shoots die back every winter. Woody perennial: A tree or shrub
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