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Published byKory Richards Modified over 6 years ago
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Objectives To learn the importance of mechanized agriculture
To become aware of careers related to mechanized agriculture To realize how mechanized agriculture has evolved and impacted American history
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Introduction There is tremendous diversity in the plant kingdom
Flowering plants have certain structures and functions in common
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Flowering Plants Basic parts of flowering plants are stems, leaves, flowers and roots Vegetative leaves stems roots Reproductive flowers fruits seeds
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Leaf Functions Photosynthesis
light is intercepted and plant sugars are manufactured large flattened surface for maximum absorption of light energy
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Leaf Parts Midrib Petiole Stipule Vein Stem
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Venation
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Leaf Types Simple Compound
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Leaf Types: Compound palmate bipinnate pinnate
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Leaf Types Needles Broad Leaf Scale-like
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Leaf Attachment opposite whorled alternate
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Leaf Shapes linear lanceolate ovate
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Leaf Shapes cordate obovate
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Leaf Margins serrate dentate entire lobed crenate sinuate
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Stem Functions Support leaves and buds, branches and reproductive structures Conduits for transporting water, minerals and manufactured food Some are modified for storage
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Stem Types Two basic stem types
Differ in arrangement of vascular tissue xylem and phloem
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Dicot cambium phloem xylem
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Monocot cambium xylem phloem
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Stem Parts
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Modified Stems Stolon horizontal stem growing on soil surface
example: strawberry plant
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Modified Stems Rhizome
grows horizontally at or just below soil surface example: iris
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Modified Stems Tuber enlarged portion of underground stem
example: potato plant
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Root Functions Anchor plant Nutrient and water absorption Food storage
Two basic root systems fibrous root tap root fibrous root tap root
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Root Growth
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Flower Functions Reproduction Attract pollinators
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Flower Parts
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Flower Types Complete Incomplete Perfect Imperfect
flower has stamens, pistil, petals and sepals Incomplete one of these four parts is missing Perfect flower has functional stamens and pistil Imperfect stamens or pistil is absent
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Inflorescence Types spike umbel corymb head raceme solitary
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Fruit Mature ovary Seeds are ovules Ovary wall may be fleshy
Example fruit types pome pod
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Seed Matured ovule Parts seed coat embryo endosperm protective coating
miniature plant endosperm food storage organ embryo area endosperm seed coat
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Germination of Dicot Two cotyledons (seed leaves)
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Germination of Monocot
One cotyledon (seed leaf)
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Acknowledgements Acquaah, George. Horticulture: Principles and Practices. New Jersey: Prentice Hall, 1999. Harris, James G. and Melinda Woolf. Plant Identification Terminology: An Illustrated Glossary. Utah: Spring Lake Publishing, 1994. Northington, David K., Goodin, J.R. The Botanical World. Missouri: C.V. Mosby Company, 1984. Dirr, Michael A. Manual of Woody Landscape Plants: Their Identification, Ornamental Characteristics, Culture, Propagation and Uses. Illinois: Stipes Publishing Company, 1975. Still, Steven M. Manual of Herbaceous Ornamental Plants. Illinois: Stipes Publishing Company, 1994.
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Acknowledgements Production Coordinator Sandra Balch Graphic Designer
Melody Rowell Technical Writer Jessica Odom V.P. of Brand Management Clayton Franklin Executive Producer Gordon W. Davis, Ph.D. © MMXIV CEV Multimedia, Ltd.
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