1 objectives: 1.to recognize different plant structures 2.to understand different functions of plant...
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Objectives:Objectives:1. To recognize different plant structures
2. To understand different functions of plant structures
3. To learn the terminology used to identify plant structures
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There is tremendous diversity in the plant
kingdom
Yet, flowering plants have certain
structures and functions in
commonlilly pad
vs.
cactus
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Photosynthesis
Light is intercepted and plant sugars are manufactured
Large flattened surface for maximum absorption of light
energy
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FunctionsFunctions• 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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Two Basic Stem TypesTwo Basic Stem Types
Differ in arrangement of vascular tissue xylem and phloem
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FunctionsFunctions• Anchor plant• Nutrient and water
absorption• Food storage• Two basic root
systems:
1. fibrous root
2. tap root
fibrous root
tap root
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Perfect and Perfect and Complete FlowersComplete Flowers
• Complete – 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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• Mature ovaryMature ovary• Seeds are ovulesSeeds are ovules• Ovary wall may be Ovary wall may be
fleshyfleshy• Example fruit typesExample fruit types
• pomepome• podpod
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• Matured ovule• Parts
• seed coat – protective coating• embryo – miniature plant• endosperm – food storage organ
embryo area
endosperm
seed coat
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Name the following:
1. Name this venation.
2. Name this leaf attachment.
3. Name this leaf margin.
4. Name this inflorescence.
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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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